Retention Rate of Periodontically-Treated Molar Teeth
Keywords:
retention rate, periodontitis, oral epidemiologyAbstract
Objective: The purpose was to estimate the retention rate of periodontically-treated molar teeth and to identify factors prognosticating tooth loss due to periodontal disease after treatment among elderly patients attending Huayploo Hospital, Nakhon Pathom.
Methods: A retrospective cohort study was conducted on all Thai patients with periodontal disease, aged 60 years and over. Patients underwent periodontal treatment by scaling and root planing in the upper molars or lower first and/or second molars the cohort was followed for a total period of 12 years. Studied clinical characteristics included sex, age, underlying diseases, and smoking. Periodontal characteristics were periodontal pockets, furcation involvement, tooth mobility, oral hygiene, and the frequency of root planning. Descriptive statistics was applied to describe patients’ characteristics. One-way analysis of variance was used for the mean comparison of more than 2 groups, exact probability was employed to compare proportions across categories. Prognostic factors for tooth loss due to periodontal disease after treatment were analyzed using generalized linear model with Poisson distribution of outcome and logarithmic link function to estimate incidence rate ratio.
Results: The retention rate of periodontically-treated molars of the elderly patients was 89%, and only 11% had teeth extracted due to periodontal disease and other causes. Factors prognosticating tooth loss due to periodontal disease after treatment were diabetes mellitus and furcation involvement. Patients with diabetes were 3.93 times the risk of tooth loss compared to non-diabetes patients. Those with furcation involvement were 3.69 times the risk of tooth loss compared to the ones without the defect.
Conclusion: High retention rate of periodontically-treated molar teeth in the cohort of elder patients with a total study period of 12 years was achieved. Diabetes mellitus and furcation involvement were significant factors in prognosticating loss of molar teeth after periodontal disease.
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ลิขสิทธิ์บทความเป็นของผู้เขียนบทความ แต่หากผลงานของท่านได้รับการพิจารณาตีพิมพ์ลงวารสารแพทย์เขต 4-5 จะคงไว้ซึ่งสิทธิ์ในการตีพิมพ์ครั้งแรกด้วยเหตุที่บทความจะปรากฎในวารสารที่เข้าถึงได้ จึงอนุญาตให้นำบทความในวารสารไปใช้ประโยชน์ได้ในเชิงวิชาการโดยจำเป็นต้องมีการอ้างอิงถึงชื่อวารสารอย่างถูกต้อง แต่ไม่อนุญาตให้นำไปใช้ในเชิงพาณิชย์
