{"product_id":"oral-health-problems-in-older-adults-with-head-and-neck-cancer-what-a-major-research-review-found","title":"Oral Health Problems in Older Adults With Head and Neck Cancer: What a Major Research Review Found","description":"\u003cp\u003eThis systematic review examined oral health and oral health-related quality of life in adults aged 60 and older who were diagnosed with head and neck cancer or oral potentially malignant disorders. The researchers screened 1,070 records and included eight studies, but the findings were conflicting. Some studies found that older patients had better oral function after treatment than younger patients, while other studies found no age-related differences. No studies were found that examined oral health outcomes in older adults with oral potentially malignant disorders.\u003c\/p\u003e\n\n\u003ch1\u003eOral Health Problems in Older Adults With Head and Neck Cancer: What a Major Research Review Found\u003c\/h1\u003e\n\n\u003ch2\u003eTable of Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#ddn-key-points\"\u003eKey Points\u003c\/a\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"#background\"\u003eBackground: Why This Research Matters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#what-are\"\u003eWhat Are Head and Neck Cancer and Oral Potentially Malignant Disorders?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#oral-side-effects\"\u003eOral Side Effects of Head and Neck Cancer Treatment\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#study-methods\"\u003eHow the Researchers Conducted This Review\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#search-strategy\"\u003eSearch Strategy and Study Selection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#study-characteristics\"\u003eCharacteristics of the Included Studies\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#key-findings\"\u003eKey Findings: Detailed Results\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#conflicting-evidence\"\u003eConflicting Evidence on Age and Oral Health\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#xerostomia-findings\"\u003eFindings on Dry Mouth After Radiotherapy\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#opmd-gap\"\u003eThe Missing Evidence on Oral Potentially Malignant Disorders\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#clinical-implications\"\u003eWhat These Findings Mean for Patients\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#limitations\"\u003eLimitations of This Review\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#recommendations\"\u003eRecommendations for Patients and Caregivers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ddn-faq\"\u003eFrequently Asked Questions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#source\"\u003eSource Information\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ddn:keypoints:start --\u003e\n\u003ch2 id=\"ddn-key-points\"\u003eKey Points\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA review of eight studies found conflicting evidence on whether older adults have better or similar oral health outcomes after head and neck cancer treatment compared to younger patients.\u003c\/li\u003e\n\u003cli\u003eOne study of 1,037 patients found older age was linked to higher risk and slower recovery from moderate-to-severe dry mouth after radiotherapy.\u003c\/li\u003e\n\u003cli\u003eNo studies were found on oral health in older adults with oral potentially malignant disorders, despite searching 1,070 records.\u003c\/li\u003e\n\u003cli\u003eAbout one-third of patients develop dental caries and 18% to 68% develop periodontitis after radiotherapy for head and neck cancer.\u003c\/li\u003e\n\u003cli\u003eThe overall risk of malignant transformation for oral potentially malignant disorders is 7.9%, and high-risk lesions should be surgically removed where possible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ddn:keypoints:end --\u003e\n\n\n\u003ch2 id=\"background\"\u003eBackground: Why This Research Matters\u003c\/h2\u003e\n\n\u003cp\u003eThe world's population is ageing rapidly. The United Nations projects that the number of people aged 60 years and over will double by 2050, reaching approximately 2.1 billion people worldwide. This shift is driven by longer life expectancy and falling birth rates.\u003c\/p\u003e\n\n\u003cp\u003eThis demographic change has major consequences for healthcare systems, social care, labour markets and family structures. While population ageing began in high-income countries, by 2050 two-thirds of the world's population aged over 60 years will live in low- and middle-income countries.\u003c\/p\u003e\n\n\u003cp\u003eCommon health conditions in older age include hearing loss, cataracts and vision problems, back and neck pain, osteoarthritis, and chronic obstructive pulmonary disease (a lung disease that makes breathing difficult). Common health conditions in older age also include diabetes, depression and dementia. As people age, they are more likely to experience several conditions at the same time.\u003c\/p\u003e\n\n\u003cp\u003eCancer risk generally increases with age. Most cancers are diagnosed in people over 70 years old. The risk of developing cancer rises significantly after age 25 to 29, particularly among women. Age-related changes in the body, including accumulated DNA damage and a declining immune system, contribute to this higher cancer risk.\u003c\/p\u003e\n\n\u003ch2 id=\"what-are\"\u003eWhat Are Head and Neck Cancer and Oral Potentially Malignant Disorders?\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHead and neck cancer (HANC)\u003c\/strong\u003e is defined by tumour location. It is a group of cancers that mainly affect the oral cavity (mouth), nasal cavity, sinuses, salivary glands, pharynx (throat) and larynx (voice box). Over 625,000 new cases of head and neck cancer are diagnosed worldwide every year.\u003c\/p\u003e\n\n\u003cp\u003eHead and neck cancer is primarily caused by tobacco and alcohol use. Other risk factors include Human Papillomavirus (HPV) infection, weakened immune systems, and exposure to certain chemicals or radiation.\u003c\/p\u003e\n\n\u003cp\u003eThe most common treatments for head and neck cancer are surgery or radiotherapy (radiation treatment). For more advanced tumours, doctors may use a combination of surgery and post-operative radiotherapy, or chemotherapy combined with radiotherapy. Approximately 34% to 75% of head and neck cancer patients are treated with radiotherapy, depending on where the tumour is located.\u003c\/p\u003e\n\n\u003cp\u003eOlder people (those over 60 years of age) may have lower survival rates and greater illness after head and neck cancer treatment than younger patients. However, the evidence on this point is conflicting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOral potentially malignant disorders (OPMDs)\u003c\/strong\u003e are a diverse group of conditions. They are defined as any abnormality of the oral mucosa (the lining inside the mouth) that is associated with a statistically increased risk of developing oral cancer. Globally, OPMDs account for 4.5% of oral lesions. They are linked to the use of tobacco, alcohol and the areca nut (a seed commonly chewed in parts of Asia).\u003c\/p\u003e\n\n\u003cp\u003eOPMDs can be classified into higher-risk lesions and lower-risk or undefined-risk lesions:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher-risk lesions:\u003c\/strong\u003e erythroplakia (red patches), non-homogeneous leukoplakia (white patches with mixed appearance), proliferative verrucous leukoplakia (a rare, progressive white patch condition) and actinic keratosis (rough, scaly patches caused by sun exposure)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower or undefined-risk lesions:\u003c\/strong\u003e homogeneous leukoplakia (uniform white patches), oral submucous fibrosis (a condition causing stiffening of the mouth tissues) and oral lichen planus (an inflammatory condition causing white lacy patches and soreness)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe risk of malignancy (cancer development) in a patient with an OPMD varies. It depends on several factors, including clinical presentation, histological subtype (what the tissue looks like under a microscope), location, size and patient demographics. The overall estimated risk of malignant transformation for all types of OPMDs is 7.9%.\u003c\/p\u003e\n\n\u003cp\u003eMalignant transformation is known to occur slowly, over many years, but it does not occur in all cases. Typically, OPMDs present as white and\/or red patches with variable margins and surfaces that may be exophytic (growing outward), wrinkled or corrugated. Depending on the nature of the OPMD, other features may be apparent. These features include ulceration, loss of pigmentation, loss of tongue papillae (the small bumps on the tongue), leathery mucosa, fibrous bands, limited tongue mobility and limited mouth opening.\u003c\/p\u003e\n\n\u003cp\u003eThe gold standard method for diagnosing OPMDs is through a biopsy (taking a small tissue sample for laboratory examination). Management involves assessing risk, educating patients about features that could indicate malignant transformation, counselling on risk factors and arranging long-term regular review. Chemo-prevention trials (using drugs to prevent cancer) have been complicated by methodological limitations and adverse events. High-risk lesions should be excised (surgically removed) where possible, in the absence of any surgical complications.\u003c\/p\u003e\n\n\u003ch2 id=\"oral-side-effects\"\u003eOral Side Effects of Head and Neck Cancer Treatment\u003c\/h2\u003e\n\n\u003cp\u003eThe oral side effects of head and neck cancer treatments such as radiotherapy and chemotherapy have been well documented. Patients with head and neck cancer are at higher risk of post-radiotherapy dental caries (tooth decay) and periodontitis (gum disease that damages the tissues supporting the teeth). This is due to radiotherapy-mediated salivary gland hypofunction (reduced saliva production caused by radiation) and radiation damage to dental and periodontal hard tissues.\u003c\/p\u003e\n\n\u003cp\u003eApproximately one-third of patients develop post-radiotherapy dental caries. Post-radiotherapy periodontitis has been shown to affect 18% to 68% of head and neck cancer patients.\u003c\/p\u003e\n\n\u003cp\u003ePatients treated with head and neck radiotherapy or chemotherapy are more likely to develop:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHyposalivation\u003c\/strong\u003e (decreased salivary flow)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXerostomia\u003c\/strong\u003e (the subjective feeling of dry mouth)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral mucositis\u003c\/strong\u003e (painful inflammation and ulceration of the mouth lining)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpaired oral health-related quality of life (OHRQoL)\u003c\/strong\u003e — meaning the mouth problems affect daily life, comfort and wellbeing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIn addition, surgical excision of a locally advanced tumour may result in severe anatomical disfigurement (changes to appearance), loss of teeth, and extensive scarring. Surgical excision may also cause permanent changes to the structure and function of various tissues within the head and neck.\u003c\/p\u003e\n\n\u003cp\u003ePrevious research into OPMDs has also suggested possible associations between these conditions and xerostomia, periodontitis and impaired oral health-related quality of life. This is particularly the case among patients affected by oral lichen planus or oral submucous fibrosis.\u003c\/p\u003e\n\n\u003cp\u003eThe aim of this systematic review was to determine the impact of head and neck cancer or OPMD and their management on oral health in older adults. The researchers compared older adults with these diagnoses to two groups. The first group was older adults without a diagnosis of head and neck cancer or OPMD. The second group was younger patients (under 60 years) with head and neck cancer or OPMD.\u003c\/p\u003e\n\n\u003ch2 id=\"study-methods\"\u003eHow the Researchers Conducted This Review\u003c\/h2\u003e\n\n\u003cp\u003eThis systematic review was carried out and reported in accordance with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. These guidelines set international standards for how systematic reviews should be conducted and reported.\u003c\/p\u003e\n\n\u003cp\u003eThe protocol for this systematic review was registered via PROSPERO (the International Prospective Register of Systematic Reviews) under the registration number CRD420251003419. Registration means the researchers publicly stated their planned methods before starting the review.\u003c\/p\u003e\n\n\u003cp\u003eThe researchers used a PICO\/PECO framework to guide their work. This framework stands for Population, Intervention\/Exposure, Comparison and Outcome. The focus question was: What is the incidence or prevalence of adverse oral health among people aged 60 years or older? These people have been diagnosed with head and neck cancer or an OPMD. This is compared to people aged 60 years or older who have not been diagnosed with these conditions. It is also compared to younger people aged less than 60 years who have been diagnosed with these conditions.\u003c\/p\u003e\n\n\u003cp\u003eThe researchers planned to include studies involving older adults (patients aged 60 years and over). The exposure of interest was a diagnosis of malignant neoplasm (cancer) of the lip, oral cavity or pharynx. This is as defined by codes 2B6 in the International Classification of Diseases version 11. The exposure also included oral potentially malignant disorders such as erythroplakia and leukoplakia.\u003c\/p\u003e\n\n\u003cp\u003eThe outcomes of interest for this systematic review included:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eDental caries (tooth decay)\u003c\/li\u003e\n\u003cli\u003eGingivitis and periodontitis (gum disease)\u003c\/li\u003e\n\u003cli\u003eTooth mobility and tooth loss\u003c\/li\u003e\n\u003cli\u003ePeri-apical infection (infection around the root tip of a tooth)\u003c\/li\u003e\n\u003cli\u003eHyposalivation and xerostomia (reduced saliva and dry mouth)\u003c\/li\u003e\n\u003cli\u003eOral health-related quality of life, including objective measures (such as OHRQoL scores and global health ratings) and subjective outcomes (such as pain, function and speech performance)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThere was no language restriction on included studies. The search date was 4th April 2025, and publications from 1960 up to April 2025 were considered.\u003c\/p\u003e\n\n\u003ch2 id=\"search-strategy\"\u003eSearch Strategy and Study Selection\u003c\/h2\u003e\n\n\u003cp\u003eThe researchers searched four major databases: MEDLINE (Ovid), Embase, PubMed and The Cochrane Library. They also performed supplementary handsearches by checking the reference lists of all included studies for additional relevant research articles.\u003c\/p\u003e\n\n\u003cp\u003eThe search terms were developed using the PICO\/PECO framework and combined with Boolean operators (OR, AND, and NOT) to construct the search strategy. The first reviewer performed the initial search across all specified databases. Any issues identified during the process were corrected and the search strategy was refined accordingly.\u003c\/p\u003e\n\n\u003cp\u003eSearch results from each database were imported into EndNote reference management software. The software automatically removed duplicate records as an initial step. Following this, three investigators independently screened titles and abstracts. Selected studies then underwent full-text review and data extraction based on mutual agreement between the three investigators.\u003c\/p\u003e\n\n\u003cp\u003eWhen full-text articles were not available, or lacked sufficient detail, the reviewers contacted the corresponding author to try to secure additional details. Reference cross-checks and manual searches were also performed to identify studies that were not discovered via the search strategy.\u003c\/p\u003e\n\n\u003cp\u003eThe inclusion criteria for studies were:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eClinical investigations of any study design related to the focus question\u003c\/li\u003e\n\u003cli\u003eConfirmed diagnosis of head and neck cancer or OPMD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe exclusion criteria were:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eTopic not relevant to the focus question\u003c\/li\u003e\n\u003cli\u003eAggregated oral health data not stratified by patient age\u003c\/li\u003e\n\u003cli\u003eReview articles\u003c\/li\u003e\n\u003cli\u003eIn vitro studies (laboratory studies not involving patients)\u003c\/li\u003e\n\u003cli\u003eAnimal studies\u003c\/li\u003e\n\u003cli\u003eInsufficient participant information and no response from investigators when seeking clarification\u003c\/li\u003e\n\u003cli\u003ePrevious investigations reporting on the same patient population (excluded but retained for reference)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eRecords were reviewed by at least three investigators independently. Disagreements were resolved by discussion, and authors were contacted for clarification when required.\u003c\/p\u003e\n\n\u003ch2 id=\"study-characteristics\"\u003eCharacteristics of the Included Studies\u003c\/h2\u003e\n\n\u003cp\u003eThe search strategy detected a total of 1,480 records from the four databases: MEDLINE (PubMed) yielded 577 records, MEDLINE (OVID) yielded 231 records, Embase yielded 658 records, and CENTRAL yielded 14 records. The removal of duplicated records eliminated 410 records.\u003c\/p\u003e\n\n\u003cp\u003eA total of 1,070 titles and abstracts were screened. Forty-seven full-text relevant records were identified and retrieved, along with two additional articles identified by a manual reference search of these 47 records. Therefore, a final list of 49 articles was full-text reviewed.\u003c\/p\u003e\n\n\u003cp\u003eOf these 49 articles, 41 were excluded based on the following criteria:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eNo objective or subjective measures of oral health: 7 studies\u003c\/li\u003e\n\u003cli\u003eAggregated oral health data presented across all age groups: 17 studies\u003c\/li\u003e\n\u003cli\u003eFollow-up less than 6 months: 3 studies\u003c\/li\u003e\n\u003cli\u003ePICO\/PECO not clearly defined: 10 studies\u003c\/li\u003e\n\u003cli\u003eOrodigestive cancer or non-head and neck cancer: 2 studies\u003c\/li\u003e\n\u003cli\u003eReview article: 1 study\u003c\/li\u003e\n\u003cli\u003eStudy presented duplicated data to an already included article: 1 study\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFinally, a total of eight studies with relevant data on oral health in older adults with head and neck cancer were included. There were no research studies identified that had specifically investigated the incidence or prevalence of oral health problems among older adults with OPMDs.\u003c\/p\u003e\n\n\u003cp\u003eOf the eight included studies:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eFour were prospective or retrospective observational cohort studies (studies that follow groups of people over time)\u003c\/li\u003e\n\u003cli\u003eThree were cross-sectional in nature (studies that look at a population at a single point in time)\u003c\/li\u003e\n\u003cli\u003eOne was a randomised controlled trial (the gold standard study design where participants are randomly assigned to different treatments)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFive of the eight included studies recruited people with cancer affecting any region of the head and neck. Two studies analysed participants with oral cancer only, and one study assessed patients with primary salivary gland cancers only. Five studies explored differences in oral health based on patient age, and three studies recruited people aged 65 years or over only.\u003c\/p\u003e\n\n\u003cp\u003eAll eight included studies recruited participants who had undergone surgery, radiotherapy, or chemotherapy, or a combination of these treatments. Seven of the eight studies assessed oral health-related quality of life using dedicated validated patient-administered questionnaires:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eEORTC QLQ-C30 (a cancer quality of life questionnaire): 4 studies\u003c\/li\u003e\n\u003cli\u003eFunctional Assessment of Cancer Therapy—Head and Neck version 4 scale: 1 study\u003c\/li\u003e\n\u003cli\u003eUniversity of Washington Head and Neck Quality of Life scale: 1 study\u003c\/li\u003e\n\u003cli\u003eThe Bochum Questionnaire on Rehabilitation: 1 study\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOne study assessed chronic treatment-related toxicity using the Common Terminology Criteria for Adverse Effects (CTCAE) version 5.0.\u003c\/p\u003e\n\n\u003ch2 id=\"key-findings\"\u003eKey Findings: Detailed Results\u003c\/h2\u003e\n\n\u003cp\u003eBecause the methodologies of the included studies varied substantially, the researchers decided it was inappropriate to combine results via meta-analysis (a statistical method that pools results from multiple studies). Instead, they presented a narrative review only, describing the findings of each study individually.\u003c\/p\u003e\n\n\u003cp\u003eIn a cross-sectional study of 638 head and neck cancer patients, Laraway and colleagues found that people older than 65 years reported better functional outcomes for speech, swallowing and saliva. These better outcomes were reported 12 months after their cancer diagnosis or primary surgery than younger patients.\u003c\/p\u003e\n\n\u003cp\u003eIn relation to patient-reported salivary flow, the best scores were seen in patients aged 75 years and over. In relation to speech, there was a progression towards better scores in those aged 65 to 74 years, and scores were better still for those aged 75 years and over.\u003c\/p\u003e\n\n\u003cp\u003eApproximately 7% to 8% of patients over 65 years reported serious problems with swallowing. Meanwhile, 3% to 6% of patients over 65 years reported serious issues with speech. Both of these rates were significantly less than patients under 65 years.\u003c\/p\u003e\n\n\u003cp\u003eHowever, 9% to 11% of patients over 65 years reported serious issues with chewing, 6% to 9% reported serious issues with taste, and 6% to 14% reported serious issues with salivary flow. There were no statistically significant differences in these outcomes compared to those aged under 65 years.\u003c\/p\u003e\n\n\u003cp\u003eIn a prospective cohort study of 1,203 patients, Aoki and colleagues assessed oral health-related quality of life in older and younger patient groups. Both age groups reported greater or equal use of treatment modalities for head and neck cancer. All patients had a determination of initial treatment. The majority of patients had surgery, and 2% had radiotherapy. However, these issues were resolved in patients under 57 years after 6 months of treatment.\u003c\/p\u003e\n\n\u003cp\u003eIn another prospective cohort study of 1,037 patients, Beetz and colleagues found a linear relationship between patient age and the risk of moderate-to-severe xerostomia (dry mouth) after radiotherapy. Patients aged greater than 56 years had increased risk of moderate-to-severe xerostomia compared to younger patients. Overall, older patients had significantly reduced rate of recovery of the sensation of dry mouth at 6, 12, 18 and 24 months post-treatment compared to patients less than 56 years.\u003c\/p\u003e\n\n\u003cp\u003eIn a prospective cohort study of 1,214 patients with squamous cell carcinoma, Derks and colleagues assessed oral health-related quality of life domains. Squamous cell carcinoma is a type of cancer that begins in flat cells lining the mouth. These domains were teeth, mouth opening, dry mouth and saliva. Older patients aged 70 years and older used more of the EORTC QLQ-H\u0026amp;N35 questionnaire than younger patients aged 54 to 60 years. Treatment differed between the age groups: 31% of older patients and 60% of younger patients had surgery plus radiotherapy. Older patients without distant metastasis had 11% compared to younger patients. Older patients who had surgery only had 32% compared to younger patients. Older patients who had radiotherapy only had 11% compared to younger patients. Older patients who had chemotherapy had 4% compared to younger patients. Older patients who had radiotherapy had 16% compared to younger patients.\u003c\/p\u003e\n\n\u003cp\u003eIn a randomised controlled trial of 574 patients, Lafont and colleagues assessed head and neck cancer patients who underwent surgery. Between 14% and 15% of patients underwent driven interventions. The head and neck region quality of life scores showed no statistically significant differences in mean scores between the intervention and control groups. Overall, 13% to 14% of patients underwent driven interventions. The assessment found no effect on oral health-related quality of life for older patients (n = 238) or control patients (n = 237) who received standard care.\u003c\/p\u003e\n\n\u003ch2 id=\"conflicting-evidence\"\u003eConflicting Evidence on Age and Oral Health\u003c\/h2\u003e\n\n\u003cp\u003eThe findings from the included studies demonstrated conflicting results. This is one of the most important conclusions of this systematic review.\u003c\/p\u003e\n\n\u003cp\u003eTwo cross-sectional studies demonstrated better post-treatment oral health-related quality of life across some domains for older patients with head and neck cancer than younger patients. These studies suggested that older age might be associated with better tolerance or adaptation to treatment effects.\u003c\/p\u003e\n\n\u003cp\u003eHowever, this finding was contradicted by data from two prospective cohort studies. These prospective studies showed no differences in post-treatment oral health-related quality of life between older and younger patients with a history of head and neck cancer.\u003c\/p\u003e\n\n\u003cp\u003eThe researchers could not determine a clear reason for these conflicting results. The differences may relate to study design, the specific questionnaires used, the timing of assessments, or differences in the patient populations studied.\u003c\/p\u003e\n\n\u003cp\u003eIn a cross-sectional study of 1,319 patients, Linsen and colleagues found that at least 15.1% of patients had lost teeth. Patients aged 54 to 60 years were significantly more likely to have lost teeth. Besides surgical treatment, 35.9% of patients reported less oral rehabilitation, and 48.9% reported less temporomandibular joint (the jaw joint) function. Older patients aged over 60 years reported less pain after cancer treatment than patients aged 45 to 60 years.\u003c\/p\u003e\n\n\u003ch2 id=\"xerostomia-findings\"\u003eFindings on Dry Mouth After Radiotherapy\u003c\/h2\u003e\n\n\u003cp\u003eFindings from a different prospective cohort study demonstrated a linear relationship between head and neck cancer patients' age and the incidence of post-radiotherapy moderate-to-severe xerostomia (dry mouth). This means that as patient age increased, the risk of experiencing significant dry mouth after radiation treatment also increased in a consistent, stepwise manner.\u003c\/p\u003e\n\n\u003cp\u003eThis finding is particularly important because xerostomia can have a major impact on daily life. Dry mouth affects eating, speaking, swallowing, taste and oral comfort. It also increases the risk of dental caries and oral infections.\u003c\/p\u003e\n\n\u003cp\u003eThe study by Beetz and colleagues followed 1,037 patients for up to 24 months after treatment. The researchers found that older patients had a significantly reduced rate of recovery from dry mouth at 6, 12, 18 and 24 months post-treatment compared to patients less than 56 years old. This suggests that older patients may experience more persistent dry mouth symptoms after radiotherapy.\u003c\/p\u003e\n\n\u003ch2 id=\"opmd-gap\"\u003eThe Missing Evidence on Oral Potentially Malignant Disorders\u003c\/h2\u003e\n\n\u003cp\u003eOne of the most striking findings of this systematic review was the complete absence of data on oral health consequences among older adults with OPMDs. Despite searching four major databases and reviewing 1,070 records, the researchers found no studies that specifically investigated the incidence or prevalence of oral health problems among older adults with OPMDs.\u003c\/p\u003e\n\n\u003cp\u003eThis is a significant gap in the medical literature. OPMDs are relatively common, accounting for 4.5% of oral lesions globally. They are associated with tobacco, alcohol and areca nut use, and they carry a 7.9% risk of malignant transformation across all types.\u003c\/p\u003e\n\n\u003cp\u003eThe global population is ageing, and older adults are more likely to have multiple health conditions. Given this, the lack of research on oral health in older adults with OPMDs is concerning. The researchers could not draw any conclusions about how OPMDs affect oral health in this population.\u003c\/p\u003e\n\n\u003ch2 id=\"clinical-implications\"\u003eWhat These Findings Mean for Patients\u003c\/h2\u003e\n\n\u003cp\u003eThe overall conclusion of this systematic review is that the evidence on the impact of head and neck cancer and OPMD on oral health in older adults is inconclusive. The researchers could not provide a definitive answer to their research question.\u003c\/p\u003e\n\n\u003cp\u003eFor patients and their families, this means that doctors and dentists currently do not have high-quality evidence. This evidence would predict exactly how head and neck cancer treatment will affect an older person's oral health. The effects appear to vary widely between individuals.\u003c\/p\u003e\n\n\u003cp\u003eSome older patients may actually report better oral function after treatment than younger patients. This could be because older patients have different expectations, or because their tumours or treatments differ in some way. Other studies suggest that older and younger patients experience similar oral health outcomes.\u003c\/p\u003e\n\n\u003cp\u003eHowever, there is consistent evidence that older patients may experience more persistent dry mouth after radiotherapy. This finding appeared in a large prospective cohort study of 1,037 patients, which is a relatively strong study design.\u003c\/p\u003e\n\n\u003cp\u003eThe lack of research on OPMDs in older adults means that patients with these conditions cannot benefit from evidence-based guidance specific to their age group. This is an area where future research is urgently needed.\u003c\/p\u003e\n\n\u003ch2 id=\"limitations\"\u003eLimitations of This Review\u003c\/h2\u003e\n\n\u003cp\u003eThis systematic review has several important limitations that patients and clinicians should understand.\u003c\/p\u003e\n\n\u003cp\u003eFirst, only eight studies met the inclusion criteria. This is a small number of studies from which to draw conclusions, especially when the studies used different methods and measured different outcomes.\u003c\/p\u003e\n\n\u003cp\u003eSecond, the methodologies of the included studies varied substantially. The studies used different questionnaires to measure oral health-related quality of life, followed patients for different lengths of time, and included patients with different types and stages of cancer. This made it impossible to combine the results statistically through meta-analysis.\u003c\/p\u003e\n\n\u003cp\u003eThird, the findings were conflicting. Some studies suggested older patients had better outcomes, while others found no difference between age groups. The researchers could not resolve these contradictions.\u003c\/p\u003e\n\n\u003cp\u003eFourth, there were no data at all on oral health consequences among older adults with OPMDs. This means the review cannot provide any guidance for this group of patients.\u003c\/p\u003e\n\n\u003cp\u003eFifth, the review excluded studies that presented aggregated oral health data across all age groups. This was necessary to answer the specific research question about older adults, but it means some potentially relevant data were not included.\u003c\/p\u003e\n\n\u003cp\u003eSixth, the review excluded studies with follow-up less than 6 months. While this ensures that only studies with meaningful follow-up were included, it may have excluded some relevant short-term outcome data.\u003c\/p\u003e\n\n\u003ch2 id=\"recommendations\"\u003eRecommendations for Patients and Caregivers\u003c\/h2\u003e\n\n\u003cp\u003eBased on this systematic review, the researchers cannot make specific evidence-based recommendations for preventing or managing oral health problems in older adults with head and neck cancer or OPMDs. However, some general principles can be drawn from the findings.\u003c\/p\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintain regular dental care.\u003c\/strong\u003e Given the high rates of dental caries and periodontitis after head and neck cancer treatment, regular dental check-ups are essential. Approximately one-third of patients develop post-radiotherapy dental caries, and 18% to 68% develop post-radiotherapy periodontitis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBe aware of dry mouth.\u003c\/strong\u003e Xerostomia (dry mouth) is a common side effect of radiotherapy, and older patients may experience slower recovery from this symptom. Patients should discuss dry mouth management options with their healthcare team.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReport oral symptoms promptly.\u003c\/strong\u003e Patients should tell their doctor or dentist about any problems with swallowing, speech, chewing, taste, saliva or mouth pain. These symptoms can often be managed with appropriate care.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderstand that age affects patients differently.\u003c\/strong\u003e Some older patients tolerate treatment better than expected, while others experience more persistent side effects. Individualised care is important.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk about OPMD monitoring.\u003c\/strong\u003e Patients with oral potentially malignant disorders should receive regular monitoring, as the risk of malignant transformation is 7.9% across all types. High-risk lesions should be excised where possible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiscuss risk factors.\u003c\/strong\u003e Tobacco, alcohol and areca nut use are major risk factors for both head and neck cancer and OPMDs. Stopping these habits can reduce risk.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003eThe researchers emphasise that more high-quality research is needed. Future studies should use standardised methods to measure oral health outcomes, include adequate numbers of older adults, and specifically investigate OPMDs in older populations.\u003c\/p\u003e\n\n\u003c!-- ddn:faq:start --\u003e\n\u003ch2 id=\"ddn-faq\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat did this review find about oral health in older adults with head and neck cancer?\u003c\/h3\u003e\n\u003cp\u003eThe review included eight studies and found conflicting results. Some studies reported that patients over 65 had better speech, swallowing and saliva outcomes after treatment than younger patients, while other studies found no age-related differences. The researchers could not combine results statistically and concluded the evidence is inconclusive.\u003c\/p\u003e\n\u003ch3\u003eDoes older age affect dry mouth after radiotherapy for head and neck cancer?\u003c\/h3\u003e\n\u003cp\u003eOne prospective cohort study of 1,037 patients found a linear relationship between age and moderate-to-severe xerostomia after radiotherapy. Patients over 56 had a higher risk, and older patients recovered more slowly at 6, 12, 18 and 24 months. This suggests dry mouth may be more persistent in older adults.\u003c\/p\u003e\n\u003ch3\u003eAre there any studies on oral health in older adults with oral potentially malignant disorders?\u003c\/h3\u003e\n\u003cp\u003eNo. The review searched four major databases and screened 1,070 records but found no studies that specifically investigated the incidence or prevalence of oral health problems among older adults with oral potentially malignant disorders. This is a significant gap in the medical literature.\u003c\/p\u003e\n\u003ch3\u003eWhat is the risk of malignant transformation for oral potentially malignant disorders?\u003c\/h3\u003e\n\u003cp\u003eThe overall estimated risk of malignant transformation for all types of oral potentially malignant disorders is 7.9%. This transformation occurs slowly over many years and does not happen in all cases. High-risk lesions should be surgically removed where possible, and regular long-term monitoring is recommended.\u003c\/p\u003e\n\u003ch3\u003eWhat should patients and caregivers do based on this review?\u003c\/h3\u003e\n\u003cp\u003eMaintain regular dental check-ups, be aware of dry mouth and discuss management options, and report oral symptoms promptly. Understand that age affects patients differently, so individualised care is important. Patients with oral potentially malignant disorders should receive regular monitoring, and stopping tobacco, alcohol and areca nut use can reduce risk.\u003c\/p\u003e\n\u003ch3\u003eWhy couldn't the researchers combine the results of the included studies?\u003c\/h3\u003e\n\u003cp\u003eThe eight included studies used different methods, questionnaires and follow-up periods, and included patients with different cancer types and stages. Because of this substantial variation, the researchers decided it was inappropriate to pool the results statistically through meta-analysis, so they presented a narrative review instead.\u003c\/p\u003e\n\u003ch3\u003eI'm over 60 and just diagnosed with head and neck cancer — when should I get a second opinion about my treatment and dry mouth risk?\u003c\/h3\u003e\n\u003cp\u003eEvidence on how head and neck cancer treatment affects oral health in adults over 60 is conflicting, so a second opinion can help clarify your individual situation. Some older patients report better speech, swallowing and saliva outcomes than younger patients, while other studies find no age-related differences. Older patients may also recover more slowly from dry mouth after radiotherapy. Because findings vary and no studies cover older adults with oral potentially malignant disorders, reviewing your diagnosis, imaging and treatment plan with an independent expert is reasonable. Diagnostic Detectives Network provides independent expert second opinions.\u003c\/p\u003e\n\u003c!-- ddn:faq:end --\u003e\n\n\u003ch2 id=\"source\"\u003eSource Information\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eOriginal article title:\u003c\/strong\u003e Adverse Oral Health in Older Adults With Head and Neck Cancer (And Oral Potentially Malignant Disorders): A Systematic Review.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAuthors:\u003c\/strong\u003e Ciaran Moore, Niamh Walls, Shaima Abujaber, Amanda Willis, Finbarr Allen, Gerry McKenna\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAuthor affiliations:\u003c\/strong\u003e Division of Restorative Dentistry \u0026amp; Periodontology, Dublin Dental University Hospital, Dublin, Ireland; Centre for Public Health, Queen's University Belfast, Belfast, UK; Centre for Dentistry, Queen's University Belfast, Belfast, UK; University College Cork, Cork, Ireland\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCorresponding author:\u003c\/strong\u003e Gerry McKenna (g.mckenna@qub.ac.uk)\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eJournal:\u003c\/strong\u003e Gerodontology, 2026; 43:339–354\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePublication details:\u003c\/strong\u003e Received 1 December 2025; Revised 10 March 2026; Accepted 13 March 2026\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDOI:\u003c\/strong\u003e https:\/\/doi.org\/10.1111\/ger.70080\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePROSPERO Registration:\u003c\/strong\u003e CRD420251003419\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKeywords:\u003c\/strong\u003e Gerodontology, head and neck cancer, oral potentially malignant disorders, systematic review\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eThis patient-friendly article is based on peer-reviewed research. It is intended for educational purposes and should not replace personalised medical advice from a qualified healthcare professional.\u003c\/em\u003e\u003c\/p\u003e","brand":"DiagnosticDetectives.Com","offers":[{"title":"Default Title","offer_id":47807311773852,"sku":null,"price":0.0,"currency_code":"KRW","in_stock":true}],"url":"https:\/\/diagnosticdetectives.kr\/products\/oral-health-problems-in-older-adults-with-head-and-neck-cancer-what-a-major-research-review-found","provider":"DiagnosticDetectives.Com","version":"1.0","type":"link"}