Evaluation of Mechanical Performance of Orthodontic Mini-Implants With Distinct Designs
Journal Title: UNKNOWN - Year 2017, Vol 12, Issue 1
Abstract
Background Orthodontic mini-implants represent one of the most used anchorage systems in daily clinical practice and frequently, these anchorage devices have to be placed between the roots of adjacent teeth reflecting the need to limit its dimensions. Among other factors, it has been suggested that mini-implant’s geometry have a great impact on primary stability. Objectives The aim of this study was to evaluate the primary stability (PS) of commercially available orthodontic mini-implants (MI) of different geometrical designs. Methods Twenty self-drilling MI (1.6 mm × 8 mm) were allocated to two groups (n = 10) according to their geometric design: INP-1 and INP-2. Twenty sections (8 mm ø × 10 mm long) were taken from bovine pelve, immersed in saline solution and stored by freezing (-20°C). Geometric characteristics concerning shape, diameter, length, pitch, thread details (number, angle and depth), thread shape factor (TSF) and conicity were evaluated by using Scanning Electron Microscope (SEM) imaging and all the measurements were carried out with Image-Pro® Insight Software. PS was evaluated by insertion torque (IT) and Periotest (PTV). Intergroup comparisons were made by Student t test. The level of significance was 5%. Results Increased IT values were observed for INP-1 (20.08 ± 3.28 N.cm) (P < 0.05), the group that presented the greatest conicity (33%) and highest thread depth (0.19 mm). Conclusions The wide geometric variability of MI indicates that MI design parameters affect its PS and it could be selected in order to improve its mechanical performance.
Authors and Affiliations
Amanda Carneiro da Cunha, Mariana Marquezan, Lincoln Issamu Nojima, Eduardo Franzotti Sant’Anna
Keywords
Related Articles
- EP ID EP196483
- DOI 10.17795/ijo-6527
- Views 110
- Downloads 0
Parental Knowledge and Attitude Towards Early Orthodontic Treatment for Their Primary School Children
Background: Malocclusion, one the most important oral health problem among children and young adults, leads to social stigma and psychological disorders. Early orthodontic treatment for children appears to be one of the...
Zirconia Surface Treatment by Different Output Powers of Er: YAG Laser and Sandblasting: SEM Evaluation
Background: Application of zirconia in dentistry has increased due to its good properties. Since zirconia is not possible to be etched, evaluation of the other methods of surface treatment is important. Objectives: The...
Effectiveness of Casein Phosphopeptide-Amorphous Calcium Phosphate on the Prevention of White Spot Lesions: A Systematic Review and Meta-Analysis
Context: One of the most important aspects of dental profession is to consider the effectiveness of the preventive systems applied and maintain the good oral hygiene, oral health and minimize the risk of caries among the...
Management of Complicated Crowding and Upper Midline Shift Associated With an Impacted Mesiodens: A Case Report with 2 years Follow-Up
Introduction: Mesiodens is the most common type of supernumerary tooth with proportion of males: females of 2: 1. The etiology of this anomaly is various and includes both genetic and environmental factors, syndromic con...
Analyzing the Crystal Structure of Alveolar Bone and its Impact on the Rate of Tooth Movement
Background: The aim of this study was to investigate the crystal structure of mineral part in the Compact and Cancellous bones in different areas of alveolar bones. Methods: In this study, 7 alveolar bone samples were p...