Incidence of C-shaped root canal systems in mandibular second molars in the native Chinese population by analysis of clinical methods / 国际口腔科学杂志·英文版
International Journal of Oral Science
;
(4): 161-165, 2012.
Article
in English
| WPRIM
| ID: wpr-358220
ABSTRACT
The aims of the study were to investigate the incidence of C-shaped root canal systems in mandibular second molars in a native Chinese population using radiography and clinical examination under microscope and to compare the relative efficacies of these methods. For the recognition of C-shaped root canal system, 1 146 mandibular second molars were selected and examined. Teeth with C-shaped canal systems were categorized by using the radiographic classification criteria and the modified Melton's method. C-shaped canals were identified in 397 (34.64%) mandibular second molars by radiography (type I, 31.23%; type II, 38.29%; type III, 30.48%). Clinical examination showed that 449 (39.18%) cases exhibited C-shaped canal systems (C1, 22.94%; C2, 48.11%; C3a, 15.59%; C3b, 13.36%). As for the result of the radiographic and clinical combined examination, C-shaped root canals were found in 473 (41.27%) mandibular second molars (C1, 21.78%; C2, 45.67%; C3a, 16.70%; C3b, 15.86%). The incidence of C-shaped root canal diagnosed by radiographic method was statistically different from that by clinical examination and the combined examination (P<0.05). The study indicated a high incidence of C-shaped canal system in a Chinese population. The combination of microscopic and radiographic examination is an effective method in identifying the C-shaped root canal system.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tooth Root
/
Diagnostic Imaging
/
Radiography, Dental
/
Chi-Square Distribution
/
China
/
Dental Pulp Cavity
/
Asian People
/
Anatomic Variation
/
Mandible
/
Microscopy
Type of study:
Diagnostic study
/
Incidence study
/
Prognostic study
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
Country/Region as subject:
Asia
Language:
English
Journal:
International Journal of Oral Science
Year:
2012
Type:
Article
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