The Microtomographic Evaluation of Marginal Bone Resorption of Immediately Loaded Scalloped Design Implant With Various Microthread Configurations in Canine Mandible: Pilot Study

Abstract

This study was undertaken to evaluate the effect of microthread geometry of scalloped design implant on marginal bone resorption. Four types of scalloped design titanium implant specimens were prepared. The type 1 implant had a machined scalloped collar, type 2 had a sandblasted and acid-etched scalloped collar, type 3 had horizontal microthreads, and type 4 had parabolic microthreads, which are parallel with the scalloped conical margin. Two implants of a type were randomly installed immediately after extraction in the mandible of a beagle dog. Definitive prostheses were delivered immediately after surgery. After 12 weeks of healing, the dog was sacrificed and microtomography was performed. Type 4 specimens showed a marginal bone loss pattern definitively analogous to the scalloped margin. In this preliminary study, microthread geometry affected the marginal bone resorption pattern of scalloped design implants. However, additional specimens and more controlled conditions should be applied in future studies to confirm these results.

Alveolar Bone Remodeling Around Immediate Implants Placed in Accordance With the Extraction Socket Classification: A Three‐Dimensional Microcomputed Tomography Analysis

“…Similar results were reported by Al‐Askar et al 20 The present results support these studies 19,20 as a significantly higher mesial and distal MBL was observed around immediate implants placed in ESC‐3 compared to those placed in the other groups. However, our results are in contradiction to previous studies 15,16,23 that reported that immediate placement of dental implants in fresh extraction sites reduces buccal bone remodeling and MBL.…”

Influence of microthreads and platform switching on stress distribution in bone using angled abutments

“…The effect of the micro-design of retention elements on the bone loss rate is not yet fully understood [9]. Hansson et al [30] showed that retention elements in the implant neck increase an implant's ability to resist an axial load 2.64-4.79 times higher than the load that can be resisted by an implant with a smooth neck [30].…”

“…The precise mechanism of marginal bone resorption is not fully understood, but it has been postulated that some factors may influence this process [9]. While late marginal bone loss has been associated with peri-implantitis and occlusal overload [4], early marginal bone loss has been associated with the implant's design (macro and microdesign) and the process of the biologic seal establishment and stabilization.…”

The Use of Leukocyte- and Platelet-Rich Fibrin During Immediate Postextractive Implantation and Loading for the Esthetic Replacement of a Fractured Maxillary Central Incisor

“…In this type of treatment, the quality and design of the implant are similarly important. The macrodesign of the implant 20 and its surface 21 are aspects of the technologies that permit the clinician to have greater control and improve the treatment outcome. 22 In this case, the use of a tapered implant was adapted to the shape of the alveolus, preserving the osseous structure surrounding the socket during immediate implant placement.…”