Device for Holding a Mini Implant Placement Guide

Introduction: Generally, a mini implant is a device which is used for fixing the bones. It helps in augmenting orthodontic anchorage. It is done wherein either by direct or indirect anchorage which further is getting removed subsequently after being used. Objective: The objective of the present research is to provide a device for holding a mini implant placement guide. Another objective of the present research is to provide a device for holding a mini implant placement guide, which provides accurate placement of a mini implant in three planes of space, namely, sagittal, vertical and transverse. Methods: The device is configured on a dental brace. The device is provided with an engaging member, an operating member, a vertical arm and a horizontal arm. The engaging member is having two engaging legs. Results: The present research provides a device which is used in an orthodontics treatment. The orthodontics is a dental specialty that aids in the correction of the alignment of teeth, with respect to the skeletal form, and a soft- tissue relationship of a patient undertaking the treatment. Conclusion: The present research provides a device for holding a mini implant placement guide. Also, the device provides accurate placement of a mini implant in three planes of space, namely, sagittal, vertical and transverse. Further, the device help in the placement site decision mesiodistally, as well as the vertical positions of the crown-to-root areas can be determined.

A Brief Review on Micro-Implants and Their Use in Orthodontics and Dentofacial Orthopaedics

The aim of this study was to review the literature and evaluate the failure rates and factors that affect the stability and success of temporary anchorage devices (TADs) used as orthodontic anchorage. Data was collected from electronic databases: MEDLINE database and Google Scholar. Four combinations of term were used as keywords: “micro-implant”, “mini-implant”, “mini-screw”, and “orthodontics”. The following selection criteria were used to select appropriate articles: articles on implants and screws used as orthodontic anchorage, published in English, with both prospective and retrospective clinical and experimental investigations. The search provided 209 abstracts about TADs used as anchorage. After reading and applying the selection criteria, 66 articles were included in the study. The data obtained were divided into two topics: which factors affected TAD success rate and to what degree and in how many articles they were quoted. Clinical factors were divided into three main groups: patient-related, implant related, and management-related factors. Although all articles included in this meta-analysis reported success rates of greater than 80 percent, the factors determining success rates were inconsistent between the studies analyzed and this made conclusions difficult.

Subperiosteal Anchorage in Orthodontics: A Narrative Review

Orthodontic anchorage is a necessity for every treatment and must be carefully evaluated by the orthodontist. It is defined as the resistance to unwanted dental movement of a tooth or a number of teeth by using different techniques. The purpose of the present paper is to highlight the subperiosteal anchorage applied to orthodontics; this technique has been debated in the literature and the purpose here is to summarize the fields of application. During the first check of previous literature 548 results were found, which have been reduced to 19 selected papers after application of the inclusion criteria and the elimination of duplicates. Multiple electronic databases were searched from 1 January 1995 to 31 December 2020 in order to identify papers eligible for current review. The data obtained by this review underlined the versatility of onplants used as absolute anchorage during orthodontic treatments, the advantages and disadvantages, the biomechanical properties and survival rates, and the clinical procedure. Further clinical studies and research are required to explore other kinds of application and to state specific guidelines; however, this study represents an update and a starting point for clinicians who want to use these devices and for further improvement of the technique.

Taurodontismo – Série de casos em pacientes jovens não sindrômicos e sindrômicos associado à hipodontia

Several human dentition developmental anomalies are reported in the literature. The etiology of these occurrences is related to genetic, environmental or sometimes idiopathic factors. Taurodontism is defined as apical displacement of the pulp floor and consequent enlargement of the pulp chamber in multiradicular teeth. It is a result of the failure to invaginate Hertwigs epithelial sheath horizontally and commonly expresses bilaterally. This morphological pattern of molars is observed in ruminant animals and was also found in ancient Neanderthals. Association of this condition to syndromes is not exclusive, it may be associated with genetic disorders such as Down Syndrome, Klinefelter Syndrome, among others. The diagnosis is exclusively radiographic, with no alterations in the dental element crown. Among the consequences is the complexity of endodontic treatment, greater fragility of taurodontic teeth submitted to endodontics and lower orthodontic anchorage of these elements. In this paper, three case reports of patients with taurodontism are described, two of them associated with hypodontia and one in a Down Syndrome patient. This paper also includes a literature review and discussion with the main clinical implications of this occurrence.

Intercorrência na instalação de miniparafuso buccal shelf – relato de caso

The use of dental support as orthodontic anchorage, used in conventional corrective orthodontic treatment, may interfere in the proper functioning of the applied mechanics, because the teeth that are used as support may suffer displacement. Nowadays, the use of miniimplants, among them buccal-shelf, has been increasingly used, as they reduce the chances of possible side effects resulting from the mechanics, because the support ceases to be dental and becomes skeletal. Despite low failure rate, according to the literature, difficulty of access and individual determination of the best area of installation of this type of miniscrew should be thoroughly evaluated, in addition to verification of bone conditions, thus avoiding the risk of poor insertion. This article presents a case of installation of an extra-alveolar miniscrew buccal-shelf type in which the device ended up being inserted in an inadequate trajectory, causing an acute inflammatory process. After removal of the extra-alveolar mini-screw, a new installation was performed guided by cone-beam computed tomography, and the orthodontic treatment was successfully concluded.

Severe hemorrhage in a patient with dengue hemorrhagic fever after insertion of orthodontic mini-implants. A case report

The objective of this paper is to report a clinical case of a patient who after installing an orthodontic mini-implant returned to the dental office seven days later with a severe hemorrhage where it was inserted. Because of the severe character of the hemorrhage, the mini-implant was removed, local compression was performed, medication to control bleeding was given and some lab tests were requested. The patient returned in 24 hours with diagnosis of dengue hemorrhagic fever (DHF). The patient was referred to the specialized hematology service where the diagnosis was confirmed. Past the critical period, a new mini-implant was inserted to continue the orthodontic treatment. It can be concluded from this account that despite the mini-implants being devices of simple installation and easy removal, it is important that the patient's systemic conditions are optimal for their overall effectiveness. Keywords Dengue; Hemorrhage; Orthodontic Anchorage Procedures.

Onplant Use for Orthodontic Anchorage Reinforcement

Introduction: In 1995, Block and Hoffman reported the successful use of a subperiosteal disk (onplant) to reinforce orthodontic anchorage in an experimental study in dogs and monkeys. It was concluded that onplants provide sufficient anchorage to successfully move and anchor teeth. Aims: The aim of this article is to discuss the development of onplant, key design features, clinical indications for use as well as any available supporting evidence. Methods: Review of the literature was carried out using the following search methods: MEDLINE and EMBASE. The search was focused on various keywords including: "onplant", "bone anchorage device" and "subperiosteal disk", which were conducted on studies published until January 2020. Results: Evidence from clinical studies is scarce, a total of 9 related papers were retrieved from the literature (2 animal studies, 3 RCTs, 2 case series and 2 case reports). All types of study designs were included in the summary to maximize potential information gain. Conclusion: In this article, we reviewed the development of onplant and outlined the general design features as well as specific design features. The onplant is no longer available in the market given that it never gained acceptance among the orthodontic community and its use is almost obsolete.