Restor Dent Endod.  2016 Nov;41(4):262-270. 10.5395/rde.2016.41.4.262.

Healing outcomes of root canal treatment for C-shaped mandibular second molars: a retrospective analysis

• Ahn HR
• Moon YM
• Hong SO
• Seo MS

• KMID: 2356002
• DOI: http://doi.org/10.5395/rde.2016.41.4.262

Abstract

OBJECTIVES
This study aimed to evaluate the healing rate of non-surgical endodontic treatment between C-shaped and non-C-shaped mandibular second molars.
MATERIALS AND METHODS
Clinical records and radiological images of patients who had undergone endodontic treatment on mandibular second molars between 2007 and 2014 were screened. The periapical index scoring system was applied to compare healing outcomes. Information about preoperative and postoperative factors as well as the demographic data of the patients was acquired and evaluated using chi-square and multinomial logistic regression tests.
RESULTS
The total healing rate was 68.4%. Healing rates for the mandibular second molar were 70.9% in C-shaped canals (n = 79) and 66.6% in non-C-shaped ones (n = 117). The difference was not statistically significant.
CONCLUSIONS
The presence of a C-shaped canal in the mandibular second molar did not have a significantly negative effect on healing after treatment. Instead, proper pulpal diagnosis and final restoration were indicated as having significantly greater influence on the healing outcomes of C-shaped and non-C-shaped canals, respectively.

Keyword

C-shaped canal; Endodontic treatment; Healing rate; Mandibular second molar; Periapical index

MeSH Terms

Dental Pulp Cavity*
Diagnosis
Humans
Logistic Models
Molar*
Retrospective Studies*

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