Failure of tooth suported fixed dental prothesis and future restorability of abutment teeth among patients visiting CMH Lahore Medical College, Lahore, Pakistan
Keywords:Fixed Partial Denture, Failure, dental abutment, Crowns, metal-ceramic crowns, complete metal crowns
Objective: Extent of failure of tooth supported fixed prosthesis may affect the future restorability of abutment tooth. The objective of this study was to identify the cause of failure in tooth supported the fixed prosthesis and to assess the future restorability of abutment teeth.
Study Design: Cross sectional study.
Place and duration: Study was conducted in department of prosthodontics, Institute of Dentistry CMH Lahore Medical College in year 20162017.
Patients and Methods: Total 50 patients were examined with 80 abutment teeth. A self-administered Proforma was made to collect data regarding patient's age, gender, type of prosthesis and cause of failure. Intra-oral examination of patients was carried out along with prosthesis evaluation. Radiographic assessment of abutment teeth was done with the aid of peri-apical and bitewing radiographs. Failure was classified and data were analyzed using SPSS 21.
Results: Periodontal breakdown of abutment teeth was reported as a most common cause of failure (38.8%) followed by caries (31.3%). endodontic failure (7.5%), mechanical failure (6.3%), and esthetic failure (5%). Least reported factor was decementation (2%). Data showed that 32.5% failures fall in grade 4 category, 22.1% in grade 6 followed by grade 5 (18.2%), 3(16.9), 2 (7.8%) and 1 (2.6%) being least common.
Conclusion: While planning any fixed prosthesis the future longevity of prosthesis as well as serviceability of abutment tooth should be considered. Oral hygiene status, endodontic status and periodontal condition of abutment teeth must be assessed before giving any prosthesis.
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