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Repair may increase survival of direct posterior restorations - A practice based study.

Abstract：

OBJECTIVES:To investigate repairs of direct restorations by a group of Dutch general dental practitioners (GDPs) and its consequences on longevity of restorations. METHODS:Data set was based on dental records of patients attending 11 general dental practices (24 Dentists) in the Netherlands. Patients that received Class II Amalgam or Composite restorations were included in the study. The outcomes were considered in two levels: "Success" - When no intervention was necessary on the original restoration, it was considered clinically acceptable. "Survival" - Repaired restorations were considered clinically acceptable. Kaplan-Meier statistics and Multivariate Cox regression were used to assess restorations longevity and factors associated with failures (p<0.05). RESULTS:59,722 restorations placed in 21,988 patients were analyzed. There was a wide variation in the amount of repairs among GDPs when a restoration had failed (Level 1). Repairs of multi-surface restorations were more frequent (p<0.001). A total of 9253 restorations (Level 1) or 6897 restorations (Level 2) had failed in a 12-year observation time. "Success" and "Survival" of the restorations reached 65.92% (AFR=4.08%) and 74.61% (AFR=2.88%) at 10 years, respectively. Patient (age, removable denture) and tooth/treatment-related factors (molars, >2 restored surfaces, endodontic treatment, Amalgam) were identified as risk factors for failure (p<0.001). CONCLUSION:Overall, the GDPs showed satisfactory rates of restoration longevity over 10 years. Repair can increase the survival of restorations although, substantial differences exist among practitioners in repair frequency and AFRs. Molars, multi-surface restorations, presence of an endodontic treatment and a removable denture were identified as risk factors for failure. CLINICAL SIGNIFICANCE:Repair, instead of total replacement of a defective restoration, is a Minimally Invasive procedure which can increase the survival of the original filling, reducing the risk for pulp complications and treatment costs.

journal_name

J Dent

journal_title

Journal of dentistry

authors

Casagrande L,Laske M,Bronkhorst EM,Huysmans MCDNJM,Opdam NJM

doi

10.1016/j.jdent.2017.06.002

subject

Has Abstract

pub_date

2017-09-01 00:00:00

pages

30-36

eissn

0300-5712

issn

1879-176X

pii

S0300-5712(17)30147-1

journal_volume

pub_type

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Repair may increase survival of direct posterior restorations - A practice based study.