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Impact of periodontal maintenance on tooth survival in patients with removable partial dentures
Author(s) -
Tada Sayaka,
Allen Patrick Finbarr,
Ikebe Kazunori,
Matsuda Kenichi,
Maeda Yoshinobu
Publication year - 2015
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/jcpe.12320
Subject(s) - dentistry , medicine , dentures , abutment , survival analysis , clinical attachment loss , periodontitis , survival rate , orthodontics , cohort , tooth loss , oral health , surgery , civil engineering , engineering
Aim Removable partial dentures ( RPD s) may have a negative impact on oral health and have the potential to cause further tooth loss, especially of abutment teeth. However, no evidence indicates the effective interval of regular periodontal maintenance after RPD provision. This practice‐based cohort study aimed to examine the impact of regular periodontal maintenance visits on survival of RPD abutment teeth. Materials and Methods One hundred and ninety‐two patients had been previously provided with 304 new clasp‐retained RPD s at Osaka University Dental Hospital, Japan. Using the Kaplan–Meier method and log‐rank test, 1094 abutments were analysed to illustrate survival curves and to compare each curve. According to the frequency of periodontal maintenance, study samples were divided into three groups; every 3–6 months (3–6M) group, 1‐year (1Y) group and no‐maintenance ( NM ) group. Results Seven‐year cumulative survival rates were 83.7% (3–6M), 75.5% (1Y) and 71.9% ( NM ) respectively. Survival of abutment teeth in the 3–6M group was significantly better than both 1Y ( p = 0.005) and NM ( p < 0.001) groups. Conclusion These longitudinal clinical data indicates that periodontal maintenance at least once in 6 months had the most favourable outcome. Frequent periodontal maintenance after RPD provision could be effective in preventing further tooth loss.