This cross sectional study investigated the clinical and radiographic status of crowned teeth with and without
root canal treatment. The study used secondary data from records of patients who received crown treatment
at the Faculty of Dentistry, University of Malaya before 2015 and walk-in patients attending the primary care
clinic between July - December 2016. The inclusion criterion was crown fitted for more than 12 months. Once
identified, the patients were assessed for clinical and radiographic status. Data were entered into and
analysed using SPSS Version 20 software. A total of 66 crowns [35 root canal treated (RCT) and 31 non-root
canal treated (n-RCT)] were identified. Chi-square test was carried out to determine the health of crowned
teeth and for its longevity in the oral cavity. There were 43 crowns (46.5% RCT; 53.5% n-RCT) with plaque
accumulation, 15 (66.7% RCT; 33.3% n-RCT) with gingival swelling/recession, 17 (46.5% RCT; 53.5% n-RCT)
with widening of the periodontal ligament, 13 (53.8% RCT; 46.2% n-RCT) with bone loss and 5 (60% RCT; 40%
n-RCT) crowns with periapical lesion. There was no statistically significant difference except for poorer
alveolar bone condition for crowns that have been in the mouth for >10 years. Based on the study, no
significant adverse pulpal involvement between crown with RCT and crown without RCT was observed.