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Variables affecting tooth survival and changes in probing depth: a long‐term follow‐up of periodontitis patients
Author(s) -
Saminsky Michael,
HalperinSternfeld Michal,
Machtei Eli E.,
Horwitz Jacob
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.12419
Subject(s) - medicine , bleeding on probing , periodontitis , dentistry , proportional hazards model , survival analysis , tooth loss , clinical attachment loss , gingival and periodontal pocket , oral health
Aim To retrospectively assess tooth‐survival rate and its association with patient and oral variables in periodontal office patients, followed up to 18 years. Material and Methods Patients in a private periodontal office whose files included initial examination ( T 0 ), reevaluation ( T Re ) and ≥10 years after T 0 ( T F ) chartings, and received periodontal therapy and supportive periodontal therapy (SPT) after T Re were included. General health, plaque scores (PI), probing depth (PPD), bleeding on probing (BOP) at six points/tooth, tooth extractions, and SPT visits were extracted from patient files at T 0 , T Re , and T F . Descriptive statistics and Cox regression analysis were performed. Results Fifty patients (mean 26 ± 4 teeth/patient, 1301 teeth) fulfilled inclusion criteria. About 20 and 129 teeth respectively were extracted before/after T Re , 96 of them for periodontal causes. PPD>7 mm at T Re (HR = 17.7, 95%CI 8.6, 36.6), age above 60 years (HR = 3.3, 95%CI 1.5, 7.2), multi‐rooted teeth (HR = 1.9, 95%CI 1.2, 3.1) and SPT<3 times/year (HR = 1.8, 95%CI 1.1, 2.9), were the best prognostic factors for tooth loss during follow‐up. ( p < 0.05, Cox regression analysis). A continuous, statistically significant reduction was observed in mean PPD among teeth that survived follow‐up [4.3 ± 1.8 mm, 3.5 ± 1.4 mm, 3.2 ± 1.3 mm, at T 0 , T Re , T F , respectively. ( p < 0.001, Repeated‐measures test)]. Conclusion Regular SPT was associated with low tooth‐loss rates and continuous reductions in probing depth. PPD after initial therapy, age above 60, multi‐rooted teeth and infrequent SPT were strong negative prognostic factors for long‐term tooth survival among periodontal patients.