Effects of miniplate anchored Herbst appliance on skeletal, dental and masticatory structures of the craniomandibular apparatus: A finite element study

Duggal, Isha; Sidhu, Maninder Singh; Chawla, Anoop; Dabas, Ashish; Dhimole, Vivek Kumar

doi:10.1016/j.ortho.2021.04.002

Cited by 11 publications

(8 citation statements)

References 36 publications

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“…Scholars have launched FEA on functional appliances to explore their treatment mechanism. Duggal’s model consisted of the maxillofacial bones, the articular disc, articular ligaments, teeth, PDL, alveolar bone, muscles, and miniplate anchored Herbst [ 15 ]. Complete components were also included in our modeling process.…”

Section: Discussionmentioning

confidence: 99%

“…Complete components were also included in our modeling process. The geometric model was constructed using images of CBCT and spiral CT. CBCT has been widely used for modelling [ 15 , 24 , 39 ] for its high spatial resolution. With the data from CBCT, we obtained a fine model of dentition and jaw which distinguished roots from the alveolar bone.…”

Section: Discussionmentioning

confidence: 99%

“…Muscle forces in maximum clenching have been reported by multiplying Koolstra’s results [ 22 ] of the physiologic cross-sectional areas by 0.37 × 10 6 N·m −2 [ 15 , 23 , 24 ]. Considering that the volunteer was high-angle, and the electromyographic (EMG) activity of the masseter and temporalis is stronger in low-angle individuals than in high-angle ones during maximum clenching [ 25 , 26 ], and the muscle force was linear to EMG signal in isometric contractions [ 27 ], the forces in maximum clenching of the masseter and temporalis could be expanded to high-angle cases based on Custodio’s results [ 25 ], shown in Additional file 1 : Table S1.…”

Section: Methodsmentioning

confidence: 99%

“…In orthodontic research, FEA has been widely used to study the stress distribution and displacement of teeth and jaws [ 13 ]. Duggal’s FEA study on orthopedic treatment suggested that the temporomandibular joint (TMJ) region should be segmented into the condyle, the disc, and the fossa in future research [ 15 ], which helps to explore whether the stress pattern was favorable for mandibular growth.…”

Section: Introductionmentioning

confidence: 99%

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Effects of the advanced mandibular spring on mandibular retrognathia treatment: a three-dimensional finite element study

Zhu

Yuan

et al. 2022

BMC Oral Health

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Background The Advanced Mandibular Spring (AMS) was newly developed as a dentofacial orthopedic appliance in conjunctive use of clear aligners to treat Class II malocclusion with mandibular retrognathia in adolescents. This study aimed to launch a biomechanical assessment and evaluate whether the stress patterns generated by AMS promote mandibular growth. Methods A three-dimensional finite element model was constructed using images of CBCT and spiral CT. The model consisted of craniomaxillofacial bones, articular discs, retrodiscal elastic stratum, masticatory muscle, teeth, periodontal ligament, aligner and AMS. Mechanical effects were analyzed in three types of models: mandibular postural position, mandibular advancement with AMS, and mandibular advancement with only muscular force. Results The stress generated by AMS was distributed to all teeth and periodontal ligament, pushing mandibular teeth forward and maxillary teeth backward. In the temporomandibular joint area, the pressure in the superior and posterior aspects of the condyle was reduced, which conformed to the stress pattern promoting condylar and mandibular growth. Stress distribution became even in the anterior aspect of the condyle and the articular disc. Significant tensile stress was generated in the posterior aspect of the glenoid fossa, which conformed to the stress pattern stimulating the remodeling of the fossa. Conclusions AMS created a favorable biomechanical environment for treating mandibular retrognathia in adolescents.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of the advanced mandibular spring on mandibular retrognathia treatment: a three-dimensional finite element study

Zhu

Yuan

et al. 2022

BMC Oral Health

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“…With the success of BAMP for Class III malocclusion, others have hypothesized that similar effects might be observed with bone-anchored mandibular protrusion appliances [47,48]. To date, results are mixed, and studies are small with only one randomized clinical trial.…”

Section: Future: Pt 1: Orthodontic Improvements Blur Orthognathic Sur...mentioning

confidence: 99%

Orthognathic surgery past, present, and future

Conley

2022

Clinical and Investigative Orthodontics

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Orthognathic surgery has been performed for over two centuries with the first procedure occurring in the 1860s. It was not until the late 1950s with the pioneering work of Obwegeser that the modern orthognathic surgery era began. From the beginning, oral surgeons and orthodontists have worked in parallel fashion; advances in both disciplines have led to what is now routinely performed. New and exciting developments are underway not only in diagnosis but also in treatment planning with computer aided surgical simulation and the use of artificial intelligence (AI) to enhance patient treatment outcomes. The purpose of this article is to briefly review the history of orthognathic surgery, to examine the present status and to highlight emerging technologies and advancements.

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