Abstract

To assess tooth supported fixed prostheses failure through biological, technical, esthetic and iatrogenic factors. Statement of Problem: Although dental literature is full of studies concerning crown and bridge failure, there is a paucity of valid research documenting the different risk factors prevalence of such failure. Material and Methods: Patients visited the dental department with complaints in fixed dental prosthesis and fulfill the inclusion criteria were enrolled in the study. Ethical approval was taken from institutional ethical committee. A written informed consent was taken. Study design and participants selection: One hundred fifty fixed partial denture wearers with the age group of 40-60 years were recruited in this cross-sectional study considering inclusion and exclusion criterion. Self-reported satisfaction was measured in terms of esthetic, function and cost. Examination of dental prosthesis, Abutment, adjacent Teeth, Mucosa were done as mentioned in the case sheet. Overall classification of FDP failure was measured as Manappallil's classification. All data were obtained by means of a questionnaire-interview, oral examination, and IOPA x-ray, if needed. Bivariate relationship and multiple logistic regression analyses were performed (α=.05). Observation and Result: The key finding of this study were as under: - The mean age of the patients in this study was 38.50 (±12.77) years. Most of the patients were males (67.3%) and were married. Majority of the patients were graduate & above (90.7%), non-vegetarian (90.7%). 73.3% of the patients were presented with dental history and. 28% with medical history. The tobacco habit was seen in 12.7% of the patients. Abutment was observed among all the patients. Vital was seen in 14%. The average survival time was 27.50 (±26.18) months. The appearance immediately after the insertion was good in 36.7%. Chipping off ceramic technical failure was found in 4.7% of the patients and loss of retention was among 64% patients. Caries in abutment biological failure endodontic was seen in 18.7%. The failure grades based on severity was; grade III and IV was in 32% of the patients. The grade V was in 14% and grade II was in 13.3%. Conclusion: This study showed flaws in preparation of tooth as well as fabrication of crown and bridges leading to different types of failure in fixed prosthesis. Summary: Fabrication of crown should follow what we have read and trained during our training in dental school as much as possible and regular follow-up is the key of long-term success

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