Micro-CT evaluation of apical delta morphologies in human teeth

被引：31

作者：

Gao, Xianhua ^{[1
,2
]}

Tay, Franklin R. ^{[3
]}

Gutmann, James L. ^{[4
]}

Fan, Wei ^{[1
,2
]}

Xu, Ting ^{[1
,2
]}

Fan, Bing ^{[1
,2
]}

机构：

[1] Wuhan Univ, State Key Lab Breeding Base Basic Sci Stomatol Hu, Sch & Hosp Stomatol, Minist Educ, Wuhan, Peoples R China

[2] Wuhan Univ, Key Lab Oral Biomed, Sch & Hosp Stomatol, Minist Educ, Wuhan, Peoples R China

[3] Augusta Univ, Dent Coll Georgia, Dept Endodont, Augusta, GA USA

[4] Texas A&M Univ, Sch Dent, Dept Restorat Sci Endodont, Dallas, TX USA

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

中国国家自然科学基金;

关键词：

ROOT-CANAL MORPHOLOGY; COMPUTED TOMOGRAPHY; MAXILLARY; 1ST; MESIOBUCCAL ROOT; PERIODONTITIS; RAMIFICATIONS; RESECTION; ANATOMY;

D O I：

10.1038/srep36501

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The apical delta is an intricate system within the root canal and incompletely debridement may affect the long-term prognosis of root canal therapy. The aim of the present study is to investigate the morphologic features of apical deltas in human teeth with micro-computed tomography (micro-CT) using a centreline-fitting algorithm. One hundred and thirty-six apical deltas were detected in 1400 teeth. Molars had more apical deltas (15.8%) than anterior teeth (6.3%). In maxillary molars, the mesiobuccal root had a significantly higher prevalence of apical delta than the palatal root or the distobuccal root. The median vertical distance of the apical delta was 1.87 mm with 13% more than 3 mm. The median diameter and length of the apical delta branches were 132.3 and 934.5 mu m. Apical delta branches were not straight with cross-sectional shapes being non-circular. These morphological features of apical delta may complicate debridement of the infected root canal system.

引用

页数：6

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