Technical validation of a computerized condylographic system

Purpose: The aim of the present study was to investigate whether there is any association between occlusal contact patterns during sleep bruxism and signs of temporomandibular disorders (TMD).Materials and methods: The association of occlusion pattern and symptoms of TMD was assessed in 240 Japanese participants. Participants completed a questionnaire to report pain and other symptoms regarding TMD and their selfawareness of sleep bruxism. A simple device (BruxChecker) custom fitted to each participant was applied to evaluate the occlusal contact pattern during sleep. Condylograph was also applied to examine the function of temporomandibular joint (TMJ).Results: Participants with a major increment in the mediotrusive side occlusal contact areas on BruxChecker reported significant impact on the high prevalence of TMD signs and self-awareness of sleep bruxism.Conclusion: The positive relationship between a certain classification of occlusal grinding during sleep bruxism and signs of TMD constitutes a key point to consider the possible role of occlusal factors during sleeping as risk indicators in the genesis of TMD.

Section: Discussionmentioning

confidence: 99%

“…Cadiax compact system (Gamma GmbH, Austria) [8] was used to characterize condylar movements. Briefly, an upper bow, which connected sagittally mounted flags that digitized hinge-axis movement, was fixed to the head with an elastic band and strap.…”

Section: Condylar Functionmentioning

confidence: 99%

Relationship between sleeping occlusal contact patterns and temporomandibular disorders in the adult Japanese population

Kawagoe¹,

Onodera²,

Tokiwa³

et al. 2009

“…This measurement was carried out for 5 mm of translation. The used quantification method was corroborated at the technological level [5,6,14].…”

Section: Methodsmentioning

confidence: 99%

Functional harmony between the sagittal condylar path inclination and the anterior guidance inclination

Zoghby

Ré

Pérez

2009

Self Cite

The determinants of the morphology of the mandibular tubercle of the Temporomandibular Joint (TMJ) have been the subject of numerous investigations but remain poorly understood.It has been hypothesized that the lingual surfaces of the maxillary anterior teeth could influence the growth, the development, and the shape of the mandibular tubercle.Nonetheless, there is disagreement concerning the existence of a functional relationship between the condylar path and the anterior guidance of the mandible.The objective of the study was to find a correlation between the mean Functional Incisal Path (FIP) of the maxillary anterior teeth and the Functional Condylar Path (FCP).Materials and methods: Subjects included in the study consisted of randomly selected dental students (n ¼ 50).For each student, the following was performed:-The tracing of multiple cuts of silicone of maxillary anterior block which were analyzed by an odontometry software program. -A mechanical axiography to register the protrusive path bilaterally.Results: A statistically significant correlation (r ¼ 0.8; p ¼ 0.0000; FCP ¼ PIF Ã 0.661 þ 9.799) between anterior guidance on the incisors (FIP mean value ¼ 56.96 AE 7.86) and sagittal condylar path inclination (FCP mean value ¼ 47.46 AE 6.56) was found during the protruding movement.Conclusion: The clinical application is interesting in the areas of both anterior restorative reconstruction and orthodontic treatment, classically by increasing by 10 the anterior guidance in relation to the condylar path or more precisely by using a regression formula.

“…A range of 10-15 mm incisal edge distance corresponds with that rotation (Fig. 1) [25]). An utmost stable bi-condylar axis is a precondition for a pure hinge axis rotation.…”

Section: Benefits Of Terminal Hinge Axis Rotationmentioning

confidence: 92%

Myostabilized centric relation

Orthlieb

Hernandez

Darmouni

et al. 2011

Intercuspation position (ICP) constitutes the occlusal reference position of the mandible while centric relation (CR) represents the articular reference position. The concept of CR depicts a key component in routine dental clinical practice due to the need for a mandibular position determined not to be dental. But a consensus on this particular topic has still not been achieved even after nearly a century of discussions with scientific and clinical arguments. A remarkable number of dental schools, restrained in their own certainty are struggling with the concept of a non-dental determined reference position, even now after many generations and decades of scientific stress. Unproductive quarrels dominate the development and consequently, a lack of reciprocal expansion of knowledge can be observed. In addition, misunderstandings bring up walls of virtual disagreements. Without pretending to have a universal knowledge, a reconnecting concept on this particular subject can be formulated, based on elementary logic and simple principles of anatomy, physiology and biomechanics. The objective of this tutorial paper is to compose and present such a concept on the basis of the scientific literature and as a synthesis of research data. The practitioner controls the homogeneity of the simple rotational character by digital perception. The absence of muscle tension (vertical oscillations) and of translation (sagittal oscillations) is an indicator for homogeneity. The patient himself gently activates his own closing movement and by doing so the correct coaptation of the condyle and disc along the articular tubercle is established. The occipital support, the light mandibular stabilization by chin control, the information of the patient before and during the procedure, the repetition of the exercise and the peripheral information through the engrammation of the localization of premature contact are parameters which facilitate the achievement of CR.