目的:介绍了新开发的非侵入性方法,用于使用树脂复合材料替换缺失的牙齿并关闭后部区域的单齿间隙。
方法:四种不同的非侵入性方法和技术程序,使用的材料和仪器在案例系列中介绍。这些包括直接口腔内插入复合材料(有和没有单独的成型辅助)和间接修复,传统或数字制造并粘合。
结果:病例系列显示,所有四种方法均可用于替换后部区域的单颗缺失牙齿,满足当前临床要求。特别注意桥体的设计,连接器区域的尺寸,与相邻牙齿的近端接触牢固,卫生,以及非预备桥(NPB)的出现。详细比较了本案例系列中说明的直接和间接技术的优缺点。
结论:目前已有几种直接和间接的非侵入性单齿置换方法。虽然证据仍然有限,有可能对NPB进行节俭的牙科干预。进一步的实验和临床研究是必要的,以证明它们可靠地满足质量要求(包括足够的存活率),满足成本效益标准(与治疗替代方案相比),并且人口有需求。
OBJECTIVE: Newly developed non-invasive methods for replace a missing tooth and closing single-tooth gaps in the poster- ior region using resin composite are presented.
METHODS: Four different non-invasive methods and the technical procedures, materials and instruments used are presented in a
case series. These include the direct intraoral insertion of composite (with and without individual shaping aids) and indirect restorations, which are fabricated conventionally or digitally and bonded.
RESULTS: The
case series showed that all four methods can be used to replace single missing teeth in the posterior region, meeting current clinical requirements. Particular attention was paid to the design of the pontics, the dimension of the connector area, firm proximal contacts to the adjacent teeth, hygiene, and appearance of the non-prep bridges (NPBs). The advantages and disadvantages for both the direct and indirect techniques illustrated in this
case series were com- pared in detail.
CONCLUSIONS: Several direct and indirect non-invasive methods for single-tooth replacement are available today. Although the evidence is still limited, there is a potential for frugal dental interventions with NPBs. Further experimental and clinical studies are necessary to demonstrate that they reliably meet quality requirements (including sufficient survival rates), satisfy the criteria of cost-effectiveness (compared to treatment alternatives) and that there is a demand from the population.