Facial Growth Patterns and Insertion Sites of Miniscrew Implants (original) (raw)
Related papers
An evaluation of insertion sites for mini-implants
The Angle Orthodontist, 2012
Objective: (1) To report the thickness of the cortical bone in insertion sites commonly used for orthodontic mini-implants, (2) to assess the impact of a change in insertion angle on primary cortical bone-to-implant contact, and (3) to evaluate the risk of maxillary sinus perforation. Materials and Methods: At autopsy, 27 human samples containing three to five adjacent teeth were excised and scanned using a table-top micro-computed tomography system. Bone thickness measurements were taken at 45° and 90° to the long the axis of the adjacent teeth, simulating a mini-implant insertion at the mid-root level. Results: In the maxilla, the overall mean cortical thickness at 90° was 0.7 mm buccally in the lateral region, 1.0 mm buccally in the anterior region, and 1.3 mm palatally. In the mandible, the mean cortical thickness was 0.7 mm buccally and 1.8 mm lingually in the anterior region; 1.9 mm buccally and 2.6 mm lingually in the lateral region. Changing the insertion angle from 90° to 4...
Mini Implants in Orthodontics â An Overview
Research & Reviews: Journal of Dental Sciences, 2017
Anchorage control is a key factor in the success of orthodontic treatment. Recent developments in implantology now allows stationary anchorage without the use of extraoral appliances or complex biomechanical procedures. Miniimplants– enhanced anchorage has become a popular concept in orthodontics. Use of skeletal anchorage devices such as osseous dental implants, miniplates, miniscrews or microscrews offers clinicians’ reliable anchorage without patient compliance. Among these anchorage devices, miniscrew implants have increasingly been used for orthodontic anchorage because of their absolute anchorage, easy placement and removal, and cost effectiveness. Therefore, the skeletal anchorage system offers a nonsurgical orthodontic treatment option for skeletal (surgical) malocclusions, as well as a nonextraction treatment for malocclusions characterized by severe maxillary or mandibular protrusion, and/or anterior crowding. The purpose of the present article is to compare the mini- impl...
Why are mini-implants lost: The value of the implantation technique!
Dental press journal of orthodontics
The use of mini-implants have made a major contribution to orthodontic treatment. Demand has aroused scientific curiosity about implant placement procedures and techniques. However, the reasons for instability have not yet been made totally clear. The aim of this article is to establish a relationship between implant placement technique and mini-implant success rates by means of examining the following hypotheses: 1) Sites of poor alveolar bone and little space between roots lead to inadequate implant placement; 2) Different sites require mini-implants of different sizes! Implant size should respect alveolar bone diameter; 3) Properly determining mini-implant placement site provides ease for implant placement and contributes to stability; 4) The more precise the lancing procedures, the better the implant placement technique; 5) Self-drilling does not mean higher pressures; 6) Knowing where implant placement should end decreases the risk of complications and mini-implant loss.
Mini-implant Usage in Orthodontic Practice
Turkish Journal of Orthodontics, 2015
Ates x; 3 and Nazan Kü çü kkeles x 4 ABSTRACT Objective: The present study was designed to investigate the general anchorage protocols and especially the tendencies during mini-implant usage among Turkish orthodontists. The main aim of the survey is to reveal if mini-implants are being used more than once and in different patients. Materials and Method: This is a cross-sectional study conducted with orthodontists who are members of the Turkish Orthodontic Society. The orthodontists were asked to click on a link to complete an automated questionnaire of 27 multiple-choice questions. Results: It was found that mini-implants are used by a great majority of the participants and in various cases. General tendencies during mini-implant usage show compatibility with the literature. Conclusion: This survey displays the preferences of Turkish orthodontists regarding mini-implant usage in their clinical practice. Moreover, it is especially important for documenting the fact that mini-implants are being used more than once and also in different patients.
Mini Implants in Orthodontics – An Overview
Anchorage control is a key factor in the success of orthodontic treatment. Recent developments in implantology now allows stationary anchorage without the use of extraoral appliances or complex biomechanical procedures. Miniimplants– enhanced anchorage has become a popular concept in orthodontics. Use of skeletal anchorage devices such as osseous dental implants, miniplates, miniscrews or microscrews offers clinicians’ reliable anchorage without patient compliance. Among these anchorage devices, miniscrew implants have increasingly been used for orthodontic anchorage because of their absolute anchorage, easy placement and removal, and cost effectiveness. Therefore, the skeletal anchorage system offers a nonsurgical orthodontic treatment option for skeletal (surgical) malocclusions, as well as a nonextraction treatment for malocclusions characterized by severe maxillary or mandibular protrusion, and/or anterior crowding. The purpose of the present article is to compare the mini- implant supported mechanics with conventional mechanics with the help of cases treated in the department of orthodontics.
American Journal of Orthodontics and Dentofacial Orthopedics, 2009
Introduction: Cortical bone thickness and overall bone depth are important factors to consider when placing an orthodontic mini-implant. The purpose of this study was to investigate both variables in the palate quantitatively to aid clinicians in planning successful mini-implant placements. Methods: Thirty dry skulls were imaged with cone-beam computed tomography technology. Coronal slices were generated on which overall bone depth and cortical bone thickness were measured at 4 levels and 34 palatal placement sites. Oneway analysis of variance (ANOVA) was used for data analysis. Results: Overall bone depth decreased with increasing distance from the midsagittal plane and from the anterior to the posterior palatal regions. Cortical bone thickness decreased from anterior to posterior, but no differences were detectable within measurement levels. Conclusions: Bone depth and cortical bone thickness of the palate were most favorable for temporary anchorage device placement at the level of the first and second premolars. This information could aid clinicians in choosing suitable palatal placement sites for orthodontic mini-implants. (Am J Orthod Dentofacial Orthop 2009;136:104-8)
Mini-implants as anchoring devices in the maxila
Mouth and Teeth, 2018
Mini-implants have emerged in orthodontics as an anchoring alternative to conventional orthodontic treatments; they have high clinical versatility, facilitating installation in various locations, especially in the inter radicular regions, eliminating problems for the orthodontist such as loss of anchorage. The size of the miniimplants should correspond to the bone available for the insertion site, cylindrical or cylindrical in shape, with a smooth or treated surface. The purpose of this study was to review the literature on the placement of mini-implants as anchoring devices in the maxilla. It is necessary the knowledge of areas with greater thickness of cortical bone to promote stability, as well as the inter-radicular spaces that are safe for the placement of such devices. Its main advantages include its reduced size, easy installation and removal, minimizing the risk of injury to anatomical structures, however it presents as main disadvantage the need for simple surgery that can cause complications if it is not well planned. The safest areas for placement of mini-implants in the maxilla are between the second premolar and first molar. The choice of screw should take into account the mesio-distal space between roots, density, bone depth and mucosal thickness, and factors such as orthodontic movement, direct or indirect anchorage. The anatomy of the chosen site has a considerable individual variation. For the use of the mini-implant, the ideal site should be analyzed by means of computed tomography, panoramic or periapical radiographs.