Biomechanics of the Mandible Part I: Measurement of Mandibular Functional Deformation Using Custom-Fabricated Displacement Transducers

Al-Sukhun, Jehad; Helenius, Mikko; Lindqvist, Christian; Kelleway, John

doi:10.1016/j.joms.2006.03.009

Cited by 24 publications

(33 citation statements)

References 16 publications

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“…6, it can be observed that regardless the loading position, the high strain was localized always close to LV implant. This strongly suggests the presence of other factor(s) that might be responsible for this strain distribution namely -as we think -is the mandible deformation that was reported in several studies in the literature [6,7].…”

supporting

confidence: 59%

Re: Biomechanical study of mandible bone supporting a four-implant retained bridge finite element analysis of the influence of bone anisotropy and foodstuff position

Hudieb

Kasugai

2010

Medical Engineering & Physics

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supporting

confidence: 59%

Re: Biomechanical study of mandible bone supporting a four-implant retained bridge finite element analysis of the influence of bone anisotropy and foodstuff position

Hudieb

Kasugai

2010

Medical Engineering & Physics

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“…The use of a sectional prosthesis design, such as multiple implant‐fixed dental prostheses or a prosthesis divided along the symphysis region, can be considered to minimise the effect of mandibular flexure . The extent of flexure with various materials is not known and is an area of further research .…”

Section: Clinical Implications Of Mmfmentioning

confidence: 99%

Clinical importance of median mandibular flexure in oral rehabilitation: a review

Sivaraman

Chopra

Venkatesh³

2015

J of Oral Rehabilitation

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The mandible has a property to flex inwards around the mandibular symphysis with change in shape and decrease in mandibular arch width during opening and protrusion of the mandible. The mandibular deformation may range from a few micrometres to more than 1 mm. The movement occurs because of the contraction of lateral pterygoid muscles that pulls mandibular condyles medially and causes a sagittal movement of the posterior segments. This movement of mandible can have a profound influence on prognosis and treatment outcome for various restorative, endodontics, fixed, removable and implant-related prosthesis. The review unfolds the causes, importance and clinical implications of median mandibular flexure in oral rehabilitation. This review also highlights the appropriate preventive measures and techniques that should be adopted by clinicians to minimise the effect of flexural movement of the jaw during oral rehabilitation. This would not only help clinicians to achieve a good prosthesis with accurate fit and longevity but also maintain the health of the surrounding periodontal or periimplant gingival tissues and bone.

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“…Another assumption of our study was that the bony structure of the skull and mandible were rigid. However, it has been shown that the mandible can deform during joint motion, 22,23 which led to some minor errors in the DDR matching process. For a few frames in each chew cycle, the mandible and fossa were barely touching along the edges of both condyles.…”

Section: Discussionmentioning

confidence: 99%

Decreased Temporomandibular Joint Range of Motion in a Model of Early Osteoarthritis in the Rabbit

Henderson

Tudares

Tashman

et al. 2015

Journal of Oral and Maxillofacial Surgery

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Purpose Analysis of mandibular biomechanics could help with understanding the mechanisms of temporomandibular joint (TMJ) disorders (TMJDs), such as osteoarthritis (TMJ-OA), by investigating the effects of injury or disease on TMJ movement. The objective of the present study was to determine the functional kinematic implications of mild TMJ-OA degeneration caused by altered occlusion from unilateral splints in the rabbit. Materials and Methods Altered occlusion of the TMJ was mechanically induced in rabbits by way of a unilateral molar dental splint (n = 3). TMJ motion was assessed using 3-dimensional (3D) skeletal kinematics twice, once before and once after 6 weeks of splint placement with the splints removed, after allowing 3 days of recovery. The relative motion of the condyle to the fossa and the distance between the incisors were tracked. Results An overall decrease in the range of joint movement was observed at the incisors and in the joint space between the condyle and fossa. The incisor movement decreased from 7.0 ± 0.5 mm to 6.2 ± 0.5 mm right to left, from 5.5 ± 2.2 mm to 4.6 ± 0.8 mm anterior to posterior, and from 13.3 ± 1.8 mm to 11.6 ± 1.4 mm superior to inferior (P < .05). The total magnitude of the maximum distance between the points on the condyle and fossa decreased from 3.6 ± 0.8 mm to 3.1 ± 0.6 mm for the working condyle and 2.8 ± 0.4 mm to 2.5 ± 0.4 mm for the balancing condyle (P < .05). The largest decreases were seen in the anteroposterior direction for both condyles. Conclusion Determining the changes in condylar movement might lead to a better understanding of the early predictors in the development of TMJ-OA and determining when the symptoms become a chronic, irreversible problem.

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Biomechanics of the Mandible Part I: Measurement of Mandibular Functional Deformation Using Custom-Fabricated Displacement Transducers

Cited by 24 publications

References 16 publications

Re: Biomechanical study of mandible bone supporting a four-implant retained bridge finite element analysis of the influence of bone anisotropy and foodstuff position

Re: Biomechanical study of mandible bone supporting a four-implant retained bridge finite element analysis of the influence of bone anisotropy and foodstuff position

Clinical importance of median mandibular flexure in oral rehabilitation: a review

Decreased Temporomandibular Joint Range of Motion in a Model of Early Osteoarthritis in the Rabbit

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