Effect of prefabricated immediate interim prosthesis design and insertion workflow on seating accuracy on implants placed via static computer-assisted implant surgery: A cross-sectional in vitro study

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

Clinical Implant Dentistry and Related Research Pub Date : 2024-02-25 DOI:10.1111/cid.13316

Jaafar Abduo BDS, DClinDent, PhD, MRACDS (Pros), Douglas Lau BDSc, Grad Dip Clin Dent, DCD

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Abstract

Background

Immediate implant restoration by prefabricated prosthesis has multiple benefits. However, the design and insertion workflow of the prosthesis may influence the seating.

Purpose

Evaluation of seating accuracy of prefabricated interim prosthesis of different designs and insertion workflows for immediate restoration of implants placed via static computer-assisted implant surgery (sCAIS).

Materials and Methods

A maxillary model without incisors was used to plan for two implants at the lateral incisor locations. According to the planned implants, sCAIS surgical template and a four-unit interim prosthesis were designed. Four prostheses were fabricated based on the design and insertion workflow. The first prosthesis involved complete fabrication (CF) of the interim prosthesis, where the interim prosthesis is fabricated for laboratory attachment to abutments. The other three prostheses were produced by partial fabrication (PF), where the interim prosthesis shell was produced with internal spacing between the fitting surface and the abutments. The PF prostheses were cemented on abutments attached to the inserted implants. Three different PF prosthesis designs were included with different levels of internal spacing: 100 μm (PF.1), 200 μm (PF.2), and 300 μm (PF.3). A total of 15 surgical models received implants on which each prosthesis was seated and scanned by a laboratory scanner. The vertical, horizontal, and proximal contact errors were measured.

Results

Although all prostheses were seated on every model, the CF prostheses had greater vertical error, followed by PF.1, PF.2, and PF.3 prostheses, respectively. A similar pattern was observed for proximal contact error, where PF.3 was most superior. PF.3 prostheses had the least horizontal error than the other prostheses.

Conclusions

All interim prostheses experienced errors at the vertical, horizontal, and proximal surfaces, which can be attributed to deviations of the inserted implants. The PF of interim prosthesis with increased internal spacing for intraoral insertion appeared to reduce seating errors.

Abstract Image

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预制即刻临时修复体设计和植入工作流程对通过静态计算机辅助种植手术植入的种植体就位准确性的影响：一项横断面体外研究。

背景：使用预制假体进行即刻种植修复有很多好处。目的：评估通过静态计算机辅助种植手术（sCAIS）进行种植体即刻修复时，不同设计和插入流程的预制临时修复体的就位准确性：材料和方法：使用不含切牙的上颌模型，在侧切牙位置规划两颗种植体。根据规划的种植体，设计了 sCAIS 手术模板和四单元临时修复体。根据设计和植入工作流程制作了四个义齿。第一个修复体涉及临时修复体的完全制作（CF），即制作临时修复体，以便在实验室中与基台连接。其他三个修复体是通过部分制作（PF）制作的，在制作临时修复体外壳时，在安装面和基台之间留有内部间距。PF修复体粘结在基台上，与插入的种植体相连。三种不同的 PF 假体设计具有不同程度的内部间距：100 μm（PF.1）、200 μm（PF.2）和 300 μm（PF.3）。共有 15 个手术模型接受了假体植入，每个假体都安装在这些模型上，并由实验室扫描仪进行扫描。测量了垂直、水平和近端接触误差：结果：尽管所有假体都在每个模型上就位，但CF假体的垂直误差较大，其次分别是PF.1、PF.2和PF.3假体。在近端接触误差方面也观察到类似的模式，PF.3 最为优越。与其他假体相比，PF.3 假体的水平误差最小：所有临时假体的垂直面、水平面和近端表面都存在误差，这可能是由于植入假体的偏差造成的。PF临时义齿在口内插入时内部间距增大，似乎可以减少就位误差。

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

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.