倾斜基台上通气式和预粘结式计算机辅助设计/制造锆基台冠垂直边缘间隙的比较评估：一项研究
A Comparative Evaluation of Vertical Marginal Gap for Vented and Precemented Cad-Cam Zirconium Copings on Angulated Abutments: An Study.
作者信息
Passanha Divya N, Sankeshwari Banashree, Pattanshetti Channaveer, Dhole Rohit, Miyyapuram Sonica, Zawar Yash
机构信息
Department of Prosthodontics Crown and Bridge, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India.
Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Sangli, Maharashtra, India.
出版信息
J Pharm Bioallied Sci. 2023 Jul;15(Suppl 2):S934-S936. doi: 10.4103/jpbs.jpbs_283_23. Epub 2023 Jul 11.
OBJECTIVE
To evaluate vertical marginal gap after cementation of Zr (zirconium) copings with palatal vent, open vent, and precementation technique on angulated abutments resulting from cement entrapment between intaglio surface of copings and angulated abutments.
MATERIALS AND METHODS
Twenty-four angled abutments and 24 CAD-CAM Zr copings were assigned to three groups depending on the type of cementation technique, comprising eight copings with palatal vent, open vent, and no vent, respectively. Vertical marginal gaps between abutment shoulder and coping margin were evaluated at four points: buccal, palatal, mesial, and distal. The readings were statistically analyzed.
RESULTS
The average mean value of vertical marginal gap at all sites for Group A with palatal vent was 158.45, for Group B with open vent was 151.84, and for Group C using precementation technique was 163.58. A statistically non-significant difference was seen for values between all sites ( > 0.05) for all groups.
CONCLUSION
The average vertical marginal gap for Group B was comparatively lower compared to Groups A and C.
目的
评估在有角度的基台上使用带有腭侧通气孔、开放通气孔的锆（Zr）内冠以及预粘结技术粘结内冠后，由于粘结剂被困在冠内表面和有角度的基台之间而产生的垂直边缘间隙。
材料与方法
根据粘结技术类型，将24个有角度的基台和24个计算机辅助设计与制造（CAD-CAM）锆内冠分为三组，分别包括八个带有腭侧通气孔、开放通气孔和无通气孔的内冠。在四个点评估基台肩部和内冠边缘之间的垂直边缘间隙：颊侧、腭侧、近中侧和远中侧。对读数进行统计学分析。
结果
带有腭侧通气孔的A组所有部位垂直边缘间隙的平均均值为158.45，带有开放通气孔的B组为151.84，使用预粘结技术的C组为163.58。所有组所有部位之间的值在统计学上无显著差异（>0.05）。
结论
与A组和C组相比，B组的平均垂直边缘间隙相对较低。
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