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使用螺旋计算机断层扫描评估上颌和下颌乳磨牙的髓腔形态:一项分析研究。

Assessment of Pulp Chamber Morphology of Primary Maxillary and Mandibular Molars Using Spiral Computed Tomography: An Analytical Study.

作者信息

Maheshwari Priya, Gangwar Anshul, De Sriparna, Dua Rasleen, Ghosh Joyroop, Kumari Shilpa

机构信息

Department of Pediatric and Preventive Dentistry, Institute of Dental Sciences, Bareilly, Uttar Pradesh, India.

出版信息

Int J Clin Pediatr Dent. 2025 Apr;18(4):431-435. doi: 10.5005/jp-journals-10005-3062. Epub 2025 May 19.

Abstract

BACKGROUND

The basic anatomy of primary teeth gives an idea of an ideal access cavity with minimal loss of tooth structure. Central groove, cemento enamel junction (CEJ), roof and floor of the pulp chamber, and furcation area are significant landmarks in tooth morphology. In primary teeth, the pulp occupies a higher volume of the crown than permanent teeth do, and with progressing caries, the comparatively thin layer of hard mineralized tissue between the inner and outer surfaces causes the tooth pulp to become involved very quickly. The thickness of mineralized tissue surrounding the pulp varies depending on the size and type of the tooth.

AIM

This study aimed to evaluate the pulp chamber morphology in primary maxillary and mandibular molars using spiral computed tomography (SCT).

MATERIALS AND METHODS

The following landmarks of forty noncarious primary maxillary and mandibular molars were scanned using SCT: (1) point A-the greatest measurement of the crown (occluso-cervically), (2) point B-distance between the reference point and the roof of the pulp chamber, (3) point C-distance between the reference point and the floor of the pulp chamber, (4) point D-height of the pulp chamber, (5) point E-distance between the furcation and the pulp chamber floor.

RESULTS AND STATISTICAL ANALYSIS

Teeth were scanned in SCT, and sliced teeth were viewed in coronal view. The results were analyzed using descriptive statistics and comparisons among various groups using Statistical Package for the Social Sciences (SPSS) version 26. Categorical data were summarized as proportions and percentages (%), and quantitative data were summarized as mean ± standard deviation (SD). The comparison between the first molars in the mandible and maxilla was analyzed using paired -tests for various dimensions. Among all the parameters, in parameter C (distance between the reference point and the floor of the pulp chamber), the -value was highly significant ( < 0.001) in maxillary and mandibular first and second primary molars.

CONCLUSION

The detailed analysis of mandibular and maxillary tooth dimensions offers crucial insights into their structural variations, essential for precise dental assessments and treatment planning.

HOW TO CITE THIS ARTICLE

Maheshwari P, Gangwar A, De S, . Assessment of Pulp Chamber Morphology of Primary Maxillary and Mandibular Molars Using Spiral Computed Tomography: An Analytical Study. Int J Clin Pediatr Dent 2025;18(4):431-435.

摘要

背景

乳牙的基本解剖结构为理想的开髓洞形提供了思路,能使牙体组织损失最小。中央沟、牙骨质釉质界(CEJ)、髓腔的顶和底以及根分叉区是牙齿形态的重要标志。在乳牙中,牙髓在牙冠中所占的体积比恒牙大,并且随着龋齿的进展,内外表面之间相对较薄的硬矿化组织层会使牙髓很快受到影响。围绕牙髓的矿化组织厚度因牙齿的大小和类型而异。

目的

本研究旨在使用螺旋计算机断层扫描(SCT)评估上颌和下颌乳磨牙的髓腔形态。

材料与方法

使用SCT扫描40颗无龋的上颌和下颌乳磨牙的以下标志:(1)A点——牙冠的最大测量值(咬合面至牙颈部),(2)B点——参考点与髓腔顶之间的距离,(3)C点——参考点与髓腔底之间的距离,(4)D点——髓腔高度,(5)E点——根分叉与髓腔底之间的距离。

结果与统计分析

牙齿在SCT中进行扫描,对切片后的牙齿进行冠状面观察。结果使用描述性统计进行分析,并使用社会科学统计软件包(SPSS)26版对不同组之间进行比较。分类数据总结为比例和百分比(%),定量数据总结为均值±标准差(SD)。使用配对t检验对下颌和上颌第一磨牙的各个维度进行比较分析。在所有参数中,在参数C(参考点与髓腔底之间的距离)方面,上颌和下颌第一、二乳磨牙的t值具有高度显著性(P<0.001)。

结论

对上颌和下颌牙齿尺寸的详细分析为其结构变异提供了关键见解,这对于精确的牙科评估和治疗计划至关重要。

如何引用本文

Maheshwari P, Gangwar A, De S, 等。使用螺旋计算机断层扫描评估上颌和下颌乳磨牙的髓腔形态:一项分析研究。《国际临床儿科牙科学杂志》2025;18(4):431 - 435。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0fc1/12131055/1c9cb334d10f/ijcpd-18-4-431-g001.jpg

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