Clinical evaluation of posterior resin composite restorations placed by dental students of Kuwait University.
OBJECTIVE
To investigate the survival rate over a 3-year period of posterior resin composite restorations placed by dental students of Kuwait University.


METHODS
Posterior resin composite restorations placed by 5th-, 6th- and 7th-year dental students between 2004 and 2005 were evaluated. All patients with posterior composite restorations placed during this period of time were recalled. Of the 204 eligible patients, 139 attended the recall. 432 posterior resin composite restorations were evaluated clinically and radiographically according to the United States Public Health Service criteria. For each restoration, the survival time and/or reasons for failure were recorded. Descriptive statistics and logistic regression analysis were used to analyze the data at a statistically significant level of p < 0.05.


RESULTS
At 3 years, the survival rate of the restorations was 95.1%, resulting in an annual failure rate of 1.7%. Recurrent caries was the most common cause of failure (71.4%). Oral hygiene and gender and age of the patient were the factors that affected the failure rate of the restoration (p < 0.05). Other factors such as tooth type and location, type of cavity, type of liner used and level of the student who performed the procedure did not affect the failure rate (p > 0.05).


CONCLUSIONS
Dental students of Kuwait University were able to place resin composite restorations in posterior teeth with a low annual failure rate. Recurrent caries was the most common cause of failure of posterior resin composite restorations. Oral hygiene was the most important factor in determining the survival of resin composite restorations.
Ministry of Health, Faculty of Dentistry, Kuwait University, Safat 13110, Kuwait.
Asmaa
A
Al-Samhan
Hanadi
H
Al-Enezi
Qasem
Q
Alomari
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D003188:Composite Resins; D016001:Confidence Intervals; D003793:Dental Restoration, Permanent / Q000295:instrumentation / Q000379:methods / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007730:Kuwait; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D009910:Oral Hygiene / Q000706:statistics & numerical data*; D012189:Retrospective Studies; D012575:Schools, Dental / Q000706:statistics & numerical data*; D012737:Sex Factors; D013335:Students, Dental / Q000706:statistics & numerical data*; D055815:Young Adult
D003188:Composite Resins