Assessment of Failure of Prosthesis in Fixed Prosthodontics Among Patients Reporting To A Teaching Dental Hospital of Karachi

Abstract

The purpose of this study was to evaluate reasons of failure for conventional crowns and fixed partial dentures in patients reporting to the Prosthodontics OPD. METHODOLOGY: This cross sectional study was carried out in the Department of Prosthodontics at Jinnah Medical and Dental College, Karachi from December 2018 to September 2019. A total of 149 patients were enrolled in the study using nonprobability, consecutive sampling technique. The demographic data was recorded and patients were examined to assess the cause of failure of fixed dental prosthesis. SPSS version 22 was used for statistical analysis. RESULTS: The mean age of the 149 prosthesis examined was 4.78 ± 4.37 years. Most of the failures 130 (87.2%) were due to biologic causes. Almost all of the patients (98.0%) cleaned their teeth by brushing. The mean life span of the 145 porcelain fused to metal prosthesis examined was 4.89 ± 4.38 years. Most of the failed restorations were single unit with a mean prosthesis age of 4.27 ± 4.26 years while 7 (4.7%) fixed partial dentures had greater than 5 units and had a mean life of 11.6 ± 5.45 years. There was a statistically significant difference in the failure of prosthesis according to its position in the dental arch (p< 0.02) CONCLUSION: Fixed dental prostheses provide one of the best treatment modalities for replacing teeth. At present the average life of prosthesis at 4 years is less than satisfactory. To improve the longevity of these restorations it is necessary to have proper patient selection, diagnosis, treatment planning, clinical and technical skills. It is also essential to educate the patient about proper oral hygiene and prosthesis maintenance so that the life span of fixed prosthesis is increased.

Major Failures and Key Risks Linked to Dental Fixed Prostheses: An in vivo Clinical Study

“…The present study aimed to examine the factors associated with dental bridge failure in Tripoli city. The gender distribution of the study population showed a higher incidence of dental bridge failure in female patients (65.3%), aligning with previous research findings [5,14,31,32]. This result corroborates the study conducted by Naz et al, which reported a higher prevalence of dental bridge failure in female patients (73.8%) compared to male patients (26.2%) [5].…”

“…The gender distribution of the study population showed a higher incidence of dental bridge failure in female patients (65.3%), aligning with previous research findings [5,14,31,32]. This result corroborates the study conducted by Naz et al, which reported a higher prevalence of dental bridge failure in female patients (73.8%) compared to male patients (26.2%) [5]. In the other studies, a higher percentage of edentulousness was seen among males than among females [33,34,35,36].…”

“…While there is accessible literature on clinical complications like bridge failure, there is a lack of comprehensive comparisons regarding the complications related to commonly used restorations and prostheses. Addressing this gap in research can provide valuable insights for clinicians in selecting the most suitable treatment options for patients [5]. Crowns/fixed dental prostheses are frequently requested due to their lower cost compared to the more expensive implants.…”

“…Mechanical failures, however, are associated with the structural soundness and proper function of the fixed dental prostheses, which may manifest as dislodged prostheses, improper dental preparation, and fractures of the abutment, prosthesis. Esthetic failures are related to the appearance of the fixed dental prostheses and may present as mismatched shades and discrepancies in contour [5,7]. By taking these factors into account, clinicians can provide high-quality care to patients with fixed prostheses and ensure their long-term success [3,4,8,10].…”

Complications Associated with Metal Ceramic Prosthesis in Fixed Partial Denture used in Peshawar

“…Employing a non-probability convenience sampling method, the sample size was determined to be 183 participants. This calculation was based on a 13.7% prevalence rate (15), with a 5% margin of error and a 95% confidence interval, where z=1.96. The research targeted patients who had been wearing metal-ceramic prostheses for more than one month, aged between 15 and 60 years, encompassing both male and female subjects.…”