Optimal Implantation Site of Orthodontic Micro-Screws in the Mandibular Anterior Region Based on CBCT.

Yannan Wang,Quan Shi,Feng Wang

doi:10.3389/fphys.2021.630859

Abstract

Background: To determine the optimal implantation site of orthodontic micro-screws based on cone beam computed tomography (CBCT) analysis in the mandibular anterior tooth region, provide a theoretical basis for orthodontic implant placement and improve post-implantation stability.Methods: Forty patients who underwent CBCT scanning were selected for this study. CBCT scanning was applied to measure the interradicular distance, buccolingual dimension, labial cortical bone thickness and lingual cortical bone thickness between mandibular anterior teeth at planes 2, 4, 6, and 8 mm below the alveolar ridge crest. The data were measured and collected to obtain a comprehensive evaluation of the specific site conditions of the alveolar bone.Results: The interradicular distance, buccolingual dimension and labial cortical bone thickness between the mandibular anterior teeth were positively correlated with the distance below the alveolar ridge crest (below 8 mm). The interradicular distance, buccolingual dimension, labial cortical bone thickness, and lingual cortical bone thickness were all greater than those in other areas between the lateral incisor root and canine incisor root 4, 6, and 8 mm below the alveolar ridge crest.Conclusion: The area between the lateral incisor root and the canine incisor root in planes 4, 6, and 8 mm from the alveolar ridge crest can be used as safe sites for implantation, while 8 mm below the alveolar ridge crest can be the optimal implantation site. An optimal implantation site can be 8 mm below the alveolar ridge crest between the lateral incisor root and the canine incisor root.

Highlights

Most patients consider orthodontic treatment to correct the relative relationship of their teeth and to improve their facial appearance with coordinating the functional relationship of their teeth, as anterior teeth play a large role in facial esthetics (Brend et al, 2020)
Detailed pairwise comparison results coupled with the data show that the interradicular distance between the mandibular anterior teeth is positively correlated with the distance below the alveolar ridge crest
Between the lateral incisor and canine, at 8 mm below the alveolar ridge crest, interradicular distances reached a maximum value of 2.77 mm

Summary

Introduction

Most patients consider orthodontic treatment to correct the relative relationship of their teeth and to improve their facial appearance with coordinating the functional relationship of their teeth, as anterior teeth play a large role in facial esthetics (Brend et al, 2020). Orthodontic Micro-Screws Optimal Implantation Site a patient’s lower anterior segment to protrude, and a deeper mandibular Spee curve will cause a deeper overbite. The mandibular anterior teeth need to be lowered to improve excessive covering, but for severely deep overbites, microscrews would be implanted into the alveolar bone of the anterior teeth of the upper and lower jaws to intrude the upper and lower anterior teeth, respectively, to obtain a more stable bite relationship. Most orthodontic patients need effective means to lower the front teeth of the mandible to improve the occlusal relationship as soon as possible to avoid occlusal trauma. The use of microimplant nail anchors can meaningfully correct of this type of deformity Despite their small diameter and short length, they can still provide stable support for various tooth movements. To determine the optimal implantation site of orthodontic micro-screws based on cone beam computed tomography (CBCT) analysis in the mandibular anterior tooth region, provide a theoretical basis for orthodontic implant placement and improve post-implantation stability

Methods

Results

Discussion

Conclusion