Cone beam computed tomography assessment of maxillary anterior teeth cervix dimensions in healthy adults for optimal anatomic healing abutments

IF 3.2 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Esthetic and Restorative Dentistry Pub Date : 2024-04-11 DOI:10.1111/jerd.13236

Jie Lu MSc, Yanjing Ou PhD, Wei Zhao MSc, Huachen Chen MSc, Kaixun He PhD, Hanyu Lin PhD, Jiang Chen PhD

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引用次数: 0

Abstract

Objectives

The abutments produced with circular symmetry failed to accurately replicate the natural teeth's cervical shapes. The purpose of this study was to measure cervical cross-sections of maxillary anterior teeth using cone beam computed tomography (CBCT) images to design anatomic healing abutments.

Materials and Methods

CBCT data of 61 patients were analyzed using Ez3D Plus software. Measurements were taken at the cemento-enamel junction (CEJ) and 1 mm coronal to CEJ for maxillary central incisors, lateral incisors, and canines. Various parameters, including area, perimeter, and eight line segments in the distal (a), disto-palatal (b), palatal (c), mesio-palatal (d), mesial (e), mesio-labial (f), labial (g), and disto-labial (h) directions, were used to describe dental neck contours. The ratios (f/b and h/d) were analyzed, and differences based on sex and dental arch morphology were explored.

Results

Significant differences were found in area and perimeter between males and females, but not in f/b and h/d ratios. Differences in the f/b ratio were observed among dental arch morphologies for maxillary central incisors, lateral incisors, and canines.

Conclusions

CBCT measurements of cervical cross-sections provide more accurate data for designing anatomic healing abutments. The fabrication of anatomical healing abutments needs to consider the influence of gender on cervical size and to explore the potential effect of arch shape on cervical morphology.

Clinical Significance

The novel method provides detailed measurements for the description of dental cervical contours for patients with bilateral homonymous teeth missing. The measurements of this study could be utilized to design more accurate anatomic healing abutments to create desired morphology of peri-implant soft tissue.

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锥形束计算机断层扫描评估健康成年人的上颌前牙牙颈部尺寸，以获得最佳解剖愈合基台

目的用圆形对称制作的基台无法准确复制天然牙的牙颈部形状。本研究的目的是使用锥形束计算机断层扫描（CBCT）图像测量上颌前牙的牙颈部横截面，以设计解剖愈合基台。对上颌中切牙、侧切牙和犬齿的牙本质-釉质交界处（CEJ）和距CEJ 1 mm的冠状面进行测量。各种参数，包括面积、周长以及远端（a）、腭远端（b）、腭端（c）、腭中端（d）、腭中端（e）、腭中端（f）、腭唇端（g）和腭远端（h）方向的八条线段，都被用来描述牙颈部轮廓。结果发现男性和女性在面积和周长上存在显著差异，但在f/b和h/d比率上没有差异。上颌中切牙、侧切牙和犬齿的 f/b 比值在不同牙弓形态之间存在差异。解剖愈合基台的制作需要考虑性别对牙颈部大小的影响，并探索牙弓形状对牙颈部形态的潜在影响。临床意义这种新方法为描述双侧同名牙缺失患者的牙颈部轮廓提供了详细的测量数据。这项研究的测量结果可用于设计更精确的解剖愈合基台，以创建理想的种植体周围软组织形态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Esthetic and Restorative Dentistry 医学-牙科与口腔外科

CiteScore

6.30

自引率

6.20%

发文量

124

审稿时长

>12 weeks

期刊介绍： The Journal of Esthetic and Restorative Dentistry (JERD) is the longest standing peer-reviewed journal devoted solely to advancing the knowledge and practice of esthetic dentistry. Its goal is to provide the very latest evidence-based information in the realm of contemporary interdisciplinary esthetic dentistry through high quality clinical papers, sound research reports and educational features. The range of topics covered in the journal includes: - Interdisciplinary esthetic concepts - Implants - Conservative adhesive restorations - Tooth Whitening - Prosthodontic materials and techniques - Dental materials - Orthodontic, periodontal and endodontic esthetics - Esthetics related research - Innovations in esthetics