Stress distribution in the temporomandibular joint after mandibular protraction: A 3-dimensional finite element method study. Part 1

Gupta, Arobinda; Kohli, Virinder Singh; Hazarey, Pushpa V; Kharbanda, Om Prakash; Gunjal, Amit

doi:10.1016/j.ajodo.2007.12.025

Cited by 30 publications

(16 citation statements)

References 39 publications

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“…A possible limitation to the present study could be that only the left side of TMJ was modeled; thus, all results are based on the characteristics of a single subject. FEM studies in the past 7,8 suggested that increasing construction bite heights was found to generate more favorable stress patterns in TMJ, which could be corelated with a possible improved condylar response to functional appliance treatment. There was availability of an experimental study by Noro et al, 21 wherein the similar hypothesis was investigated.…”

Section: Discussionmentioning

confidence: 99%

“…7,8 This could be attributed to the use of recent version of software with greater sophistication and advanced CAD modeling capabilities. The quality of pattern of stresses in the present study was similar to that in the studies by Gupta et al 7,8 who used IDEAS software and ANSYS 8.0 version, though this study used MIMICS software, which is believed to be more accurate for the CAD modeling procedure along with ANSYS 13.0 version for finite element analysis.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8] Finite element method (FEM) studies on human temporomandibular joint (TMJ) are being increasingly carried out to elucidate the biomechanical reactions of functional appliances. FEM is an in vitro, highly sophisticated, and noninvasive method.…”

Section: Introductionmentioning

confidence: 99%

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Stress distribution in the temporomandibular joint after mandibular protraction: A three-dimensional finite element study

Shrivastava¹,

Hazarey²,

Kharbanda

et al. 2015

The Angle Orthodontist

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Objective: To evaluate the stress patterns in temporomandibular joint (TMJ) during mandibular protraction at different horizontal advancements with constant vertical height in a construction bite using a three-dimensional finite element method. Materials and Methods: A three-dimensional computer-aided model was developed from the magnetic resonance imaging (MRI) of a growing boy (age 12 years) using MIMICS software (version 7.0, Materialise, Leuven, Belgium). Stresses with constant vertical opening of 5 mm changing the sagittal advancements from 0 mm to 5 mm and 7.5 mm were recorded. Differences in magnitude and pattern of stresses were compared. Results: The tensile stresses in the posterosuperior aspect of the condylar head and on the posterior aspect of the glenoid fossa migrated posteriorly with increased bite advancements. The location of tensile stresses changed in the condylar head and fossa on mandibular protraction of 5 mm to 7 mm. Conclusion: This study indicates that larger horizontal advancements of construction bites may not be favorable for tissues of TMJ. Clinical application necessitates study on an animal model.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Stress distribution in the temporomandibular joint after mandibular protraction: A three-dimensional finite element study

Shrivastava¹,

Hazarey²,

Kharbanda

et al. 2015

The Angle Orthodontist

Self Cite

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show abstract

“…Finite element analysis has indicated that stress levels within the condyle are doubled with flexible fixed functional appliances, for example. 21 Moreover, Gupta et al, 22 in an experimental model, have reported accumulation of tensile stresses in the postero-superior aspect of the condyle with sustained mandibular forward posture. Similarly, tensile forces arise in the glenoid fossa within the posterior connective tissues.…”

Section: Function and Craniofacial Morphologymentioning

confidence: 99%

Biological basis for functional appliance therapy

Fleming

Lee

2016

Orthodontic Functional Appliances

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“…[1][2][3]8 A recent study evaluated patterns of stress generation in the TMJ after mandibular protraction by using a three-dimensional finite element method. 9,10 The relationship between temporomandibular disorders (TMDs) and orthodontic treatment has been the material for much debate. Some studies suggest that orthodontic treatment increases the risk of developing TMDs, 11,12 whereas two review studies 13,14 and the data from a meta-analysis 15 indicate that orthodontic treatment does not increase the prevalence of TMDs.…”

Section: Introductionmentioning

confidence: 99%

Changes in temporomandibular joint disc position and form following Herbst and fixed orthodontic treatment

Aidar¹,

Dominguez²,

Yamashita³

et al. 2010

The Angle Orthodontist

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; Má rcio Abrahã o d ABSTRACT Objective: To determine the changes in the position and form of the temporomandibular joint articular disc in adolescents with Class II division 1 malocclusion and mandibular retrognathism treated with the Herbst appliance (phase I) and fixed orthodontic appliance (phase II). Materials and Methods: Thirty-two consecutive adolescents went through phase I of treatment and 23 completed phase II. The temporomandibular joints were evaluated qualitatively by means of magnetic resonance images at the beginning of treatment (T1), during phase I (T2), at the end of phase I (T3), and at the end of phase II (T4). Results: Significant changes in disc position were not observed with the mouth closed between T1 3 T3 (P 5 .317), T3 3 T4 (P 5 .287), or T1 3 T4 (P 5 .261). At T2, on average, the disc was positioned regressively. With the mouth open, no difference was observed between T1 3 T3 (P 5 .223) or T1 3 T4 (P 5 .082). We did observe a significant difference between T3 3 T4 (P , .05). Significant changes in the disc form were found with the mouth closed between T1 3 T2 (P , .001) and T2 3 T3 (P , .001). Conclusions: At the end of the two-phase treatment, in general terms, the position and form of the initial articular discs were maintained; however, in some temporomandibular joints some seemingly adverse effects were observed at T4. (Angle Orthod. 2010;80:843-852.)

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Stress distribution in the temporomandibular joint after mandibular protraction: A 3-dimensional finite element method study. Part 1

Cited by 30 publications

References 39 publications

Stress distribution in the temporomandibular joint after mandibular protraction: A three-dimensional finite element study

Stress distribution in the temporomandibular joint after mandibular protraction: A three-dimensional finite element study

Biological basis for functional appliance therapy

Changes in temporomandibular joint disc position and form following Herbst and fixed orthodontic treatment

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