Marginal tissue response to different implant neck design

Abstract

STATEMENT OF PROBLEM:Loss of the marginal bone to the first thread have been accepted but continuous effort have been made to reduce this bone loss by varying implant design and surface texture. PURPOSE: This animal study has examined the histomorphometric variations between implants with micro-thread, micro-grooved and turned surfaced neck designs. MATERIAL AND METHODS: Four mongrel dogs have been used the premolars removed and left to heal for three months. One of each implant systems with turned neck, micro-thread and micro-grooved were placed according to the manufacturers'protocol and left submerged for 8 and 12 weeks. These were then harvested for histological examination. RESULTS: The histologically all samples were successfully ossointegrated and active bone remodelling adjacent to implants. With the micro-grooved implants 0.40 mm and 0.26 mm of the marginal bone level changes were observed at 8 and 12 weeks respectively. The micro-threaded implants had changes of 0.79 mm and 0.56 mm at 8 and 12 weeks respectably. The turned neck designed implants had marginal bone level changes of 1.61 mm and 1.63 mm in 8 and 12 weeks specimens. A complex soft tissue arrangement could be observed against micro-threaded and micro-grooved implant surfaces. CONCLUSION: Within the limitations of this study, it could be concluded that implants with micro-grooved had the least and the turned neck designed implants had the most changes in the marginal bone level. The textured implant surfaces affect soft tissue responses.

Evaluation of Implant Collar Surfaces for Marginal Bone Loss: A Systematic Review and Meta-Analysis

“…Many factors have been proposed to contribute to the marginal bone loss (MBL) around an implant. Factors such as unfavorable stress distribution, surgical trauma, implant-abutment microgap, and bacterial infiltration result in apical migration of the biologic width; thus the bone is protected from further irritation [ 7 – 10 ]. Implant neck design and surface characterization have been associated with reduced marginal bone loss [ 1 , 11 , 12 ]; this has led to the development of implants with new collar configuration and topographic modification in order to improve the soft and hard tissue osseointegration.…”

Importance and requirements for dental prosthesis order platform services: a survey of dental professionals

“…Dental clinics and laboratories maintain distinct roles in the fabrication process, using the work order form as a communication tool. 1 Sufficient patient and prosthesis fabrication information in the work order form makes it possible to produce high-quality dental prostheses and reduce unnecessary remakes. 2 Advancements in dental imaging equipment have facilitated the digital transmission of patient data, which was previously unattainable using conventional methods.…”

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“…These factors collectively contribute to the apical migration of the biologic width, a protective mechanism that shields the underlying bone from further irritation. 5,6 It is important to note that the existing literature lacks a consensus on the effectiveness of these configurations and their influence on marginal bone loss. Notably, implants with shorter polished smooth collars have shown promise in reducing marginal bone loss.…”