比较选择性激光熔化和传统技术制造的钛和钴铬种植基台的表面微观粗糙度和适应性。

IF 3.7 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Implant Dentistry and Related Research Pub Date : 2024-09-20 DOI:10.1111/cid.13390

Refal Albaijan, Fahim Vohra, Talal M. Alnassar, Ali Robaian, Sarah M. Alnafaiy, Mohammed S. Murayshed, Abdullah H. Alnasser, Abdullah Alshehri, Khalid Gufran

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引用次数: 0

摘要

目的：本研究的目的是评估选择性激光熔融（SLM）种植基台与铸造和机加工种植基台相比的表面微观粗糙度和基台适应性：根据制作技术将 40 个基台标本平均分为以下四组（n = 10）：机加工钛合金基台（对照组）、铸造 CoCr 基台、SLM-CoCr 基台和 SLM-Ti 合金基台。将 40 个内连接种植体（直径 4.0 ×10 mm，Superline™，Dentium Co.，韩国首尔）安装在透明的丙烯酸树脂中。使用三维光学非接触式表面显微镜对制作的基台进行表面微粗糙度评估。使用布鲁克显微 CT 评估基台与种植体界面的垂直和水平适应性。除了使用 Kruskal-Wallis 检验评估垂直错位外，所有变量的数据均使用方差分析和 Tukey 事后比较检验进行评估。自变量（表面粗糙度）与因变量（水平误差和垂直误差）之间的相关性采用皮尔逊相关法进行评估：结果：SLM-钛基台与铸造基台（26.08 ± 3.93 μm）和机加工基台（26.45 ± 7.33 μm）相比，表面粗糙度（p 0.05）明显更高。铸造铬钴基台（487.01 ± 40.34 μm）、SLM-铬钴基台（358.38 ± 114.93 μm）和 SLM-Ti 基台（299.85 ± 172.88 μm）之间的垂直错位值相当（p > 0.05）。配合面的表面粗糙度与基台适应性之间呈正相关：结论：与铸造（对照）基台相比，SLM CoCr 基台的粗糙度低，基台适应性（垂直和水平方向）相当。因此，应将 SLM CoCr 基台作为潜在的种植体基台进行临床研究。

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Comparison of surface micro-roughness and adaptation of titanium and cobalt chrome implant abutment fabricated by selective laser melting and conventional techniques

Purpose

The objective of this study was to assess the surface micro-roughness and abutment adaptation of selective laser melting (SLM) implant abutments in comparison to cast and machined implant abutments.

Methods

Forty abutment specimens were divided equally into four groups according to the fabrication technique as follows (n = 10), Machined Ti alloy abutments (Control), Cast CoCr abutments, SLM-CoCr abutments, and SLM-Ti alloy abutments. Forty internal connection implants (Ø 4.0 ×10 mm, Superline™, Dentium Co., Seoul, Korea) were mounted in clear acrylic resin. Fabricated abutments were assessed for surface micro-roughness using a 3D optical noncontact surface microscope. Vertical and horizontal adaptation of the abutment with implant interface was assessed by using Bruker micro-CT. Data was assessed using analysis of variance and Tukey post hoc comparison tests for all the variables except vertical misfit was assessed using Kruskal–Wallis test. Pearson correlation was used to assess dependence between independent variable (surface roughness) and dependent variables (Horizontal misfit and vertical misfit).

Results

SLM-Ti abutments showed significantly rougher surface (p < 0.05) among the study groups. While SLM-CoCr abutments were smoother than Cast abutments with mean Ra of 1.30 ± 0.11 and 1.58 ± 0.17 μm, respectively (p < 0.05). For abutment adaptation, SLM-Ti abutments showed the highest horizontal misfit among the groups (p < 0.05). While, SLM-CoCr abutments (29.24 ± 11.11 μm) showed comparable (p > 0.05) horizontal misfit results with Cast (26.08 ± 3.93 μm) and machined (26.45 ± 7.33 μm) abutments. Comparable (p > 0.05) vertical misfit values between Cast CoCr (487.01 ± 40.34 μm), SLM-CoCr (358.38 ± 114.93 μm) and SLM-Ti (299.85 ± 172.88 μm) abutments were observed. A positive correlation was found between the surface roughness of the mating surfaces and abutment adaptation.

Conclusion

SLM CoCr abutments exhibited low roughness and comparable abutment adaptation (vertically and horizontally) than cast (control) abutments. Therefore, SLM CoCr abutments should be clinically investigated as potential implant abutments for clinical use.

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来源期刊

Clinical Implant Dentistry and Related Research 医学-牙科与口腔外科

CiteScore

6.00

自引率

13.90%

发文量

103

审稿时长

4-8 weeks

期刊介绍： The goal of Clinical Implant Dentistry and Related Research is to advance the scientific and technical aspects relating to dental implants and related scientific subjects. Dissemination of new and evolving information related to dental implants and the related science is the primary goal of our journal. The range of topics covered by the journals will include but be not limited to: New scientific developments relating to bone Implant surfaces and their relationship to the surrounding tissues Computer aided implant designs Computer aided prosthetic designs Immediate implant loading Immediate implant placement Materials relating to bone induction and conduction New surgical methods relating to implant placement New materials and methods relating to implant restorations Methods for determining implant stability A primary focus of the journal is publication of evidenced based articles evaluating to new dental implants, techniques and multicenter studies evaluating these treatments. In addition basic science research relating to wound healing and osseointegration will be an important focus for the journal.