Structurally modified Non-Compliant Transpalatal arch to correct an anterior open bite with fused mandibular right incisors

2020 ◽  
Vol 34 (3) ◽  
pp. 96-98
Author(s):  
Anand Marya ◽  
2021 ◽  
Vol 11 (24) ◽  
pp. 11749
Author(s):  
Ornnicha Pooktuantong ◽  
Takeshi Ogasawara ◽  
Masayoshi Uezono ◽  
Pintu-on Chantarawaratit ◽  
Keiji Moriyama

An anterior open bite is one of the most difficult malocclusions in orthodontic treatment. For such malocclusion, orthodontic miniscrew insertion into both buccal and palatal alveolar regions has been indicated for molar intrusion, but it involves a risk of tooth root injury. To solve the problem, a midpalatal miniscrew-attached extension arm (MMEA) is adopted. However, this method causes palatal tipping of the molar because intrusive loads were applied only from the palatal side. Currently, a transpalatal arch is added to avoi0d tipping movement, but it induces the patient’s discomfort. Hence, the objective of this study was to evaluate the loading conditions for maxillary molar intrusion without tipping movement, only by MMEA through finite element (FE) analysis. FE models of maxillary right first molar and surrounding tissues were created. Three hook positions of MMEA were set at 6.0 mm perpendicular intervals in the occluso-apical direction along the mucosal contour. An intrusive unit load was applied from the palatal side of the molar, and various counter loads were applied from the buccal side. An optimal counter load for molar intrusion without palatal tipping was observed in each hook position. In conclusion, an ideal maxillary molar intrusion can be achieved only by MMEA with an optimal counter load.


2019 ◽  
Vol 9 ◽  
pp. 246-251
Author(s):  
Joy Chang ◽  
Shivam Mehta ◽  
Po-Jung Chen ◽  
Madhur Upadhyay ◽  
Sumit Yadav

This case report describes the use of temporary anchorage device (TAD)-supported molar intrusion to correct anterior open bite and achieve overjet correction. A 13-year-old female presented with a Class II skeletal profile, with increased overjet and anterior open bite. She was treated with a combination of intrusion of the posterior teeth and extrusion of anterior teeth. The intrusion of maxillary posterior teeth was done with a palatal TAD and a transpalatal arch on the upper first molars to control the transverse dimension. The patient’s mandibular plane angle was maintained with this treatment approach.


2021 ◽  
pp. 1-16
Author(s):  
Zoë Thijs ◽  
Laura Bruneel ◽  
Guy De Pauw ◽  
Kristiane M. Van Lierde

<b><i>Background:</i></b> Relationships between malocclusion and orofacial myofunctional disorders (OMD), as well as malocclusions and articulation disorders (AD) have been described, though the exact relationships remain unclear. Given the high prevalence of these disorders in children, more clarity is needed. <b><i>Summary:</i></b> The purpose of this study was to determine the association between OMD (specifically, bruxism, deviate swallowing, caudal resting tongue posture, and biting habits), AD, and malocclusions in children and adolescents aged between 3 and 18 years. To conduct a systematic review, 4 databases were searched (MEDLINE, Embase, Web of Science, and Scopus). The identified articles were screened for the eligibility criteria. Data were extracted from the selected articles and quality assessment was performed using the tool of Munn et al. [Int J Health Policy Manag. 2014;3:123–81] in consensus. Using the search strategy, the authors identified 2,652 articles after the removal of duplicates. After reviewing the eligibility criteria, 17 articles were included in this study. One of the included articles was deemed to have an unclear risk of bias, whereas all other articles were considered to have a low risk of bias. The articles showed a relationship between anterior open bite and apico-alveolar articulatory distortions, as well as between anterior open bite and deviate swallowing. For the biting habits, bruxism, and low tongue position no clear conclusions could be drawn. <b><i>Key Messages:</i></b> The current review suggests a link between specific types of malocclusion and OMD and AD. However, more high-quality evidence (level 1 and level 2, Oxford Levels of Evidence) is needed to clarify the cooccurrence of other OMD, AD, and malocclusions.


2009 ◽  
Vol 79 (4) ◽  
pp. 804-811 ◽  
Author(s):  
Kenichi Sasaguri ◽  
Rika Ishizaki-Takeuchi ◽  
Sakurako Kuramae ◽  
Eliana Midori Tanaka ◽  
Takashi Sakurai ◽  
...  

Abstract A 32-year-old Japanese female patient consulted the authors' dental clinic with a 4.5-year history of rheumatoid arthritis (RA). She complained of pain during mouth opening and difficulty in eating due to masticatory dysfunction caused by an anterior open bite. Imaging showed severe erosion and flattening of both condyles. RA stabilized after pharmacological therapy and became inactive during the orthodontic therapy aimed at reconstructing an optimal occlusion capable of promoting functional repositioning of the mandible. At present, 4 years and 2 months postretention, the reconstructed occlusion remains stable, and both condyles continue to be remodeled. The distance from reference position to intercuspal position has gradually decreased throughout the 4-year posttreatment and postretention periods. Orthodontic therapy that comprehensively reconstructs occlusion and enhances the functioning of the mandible can induce remodeling of eroded condyles, even those with a history of rheumatoid arthritis.


1986 ◽  
Vol 31 (6) ◽  
pp. 455-458 ◽  
Author(s):  
Caroline H. C. Acton

Sign in / Sign up

Export Citation Format

Share Document