The influence of the leaf gauge and anterior jig on jaw muscle electromyography and condylar head displacement: a pilot study
| Autor: | RE Santosa, K. Wanigaratne, M. Azizi, Terry Whittle, Iven Klineberg |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Adult
Male Dental Occlusion Centric Optics and Photonics Movement Pilot Projects Temporal Muscle Electromyography Malocclusion Angle Class II Lateral pterygoid muscle Condyle Bite Force stomatognathic system Neck Muscles Medicine Humans Displacement (orthopedic surgery) General Dentistry medicine.diagnostic_test business.industry Dental occlusion Masseter Muscle Mandibular Condyle Pterygoid Muscles Anatomy medicine.disease Bite force quotient medicine.anatomical_structure Malocclusion Angle Class III Jaw Relation Record Masticatory Muscles Suprahyoid muscles Malocclusion Electronics business Muscle Contraction |
| Zdroj: | Australian dental journal. 51(1) |
| ISSN: | 0045-0421 |
| Popis: | Background: A leaf gauge and an anterior jig may be used to assist the recording of a reproducible jaw position for restorative and prosthodontic treatment. This study investigated possible condylar displacement using an opto-electronic jaw-tracking device and a leaf gauge or anterior jig. The effect of a leaf gauge and anterior jig on jaw muscle electromyography was also examined. Methods: Five healthy adults without symptoms of temporomandibular disorders were selected. Condylar displacement during clenching were recorded simultaneously with electromyographic activity of superior and inferior heads of the lateral pterygoid, anterior and posterior temporalis, masseter, and suprahyoid muscles. Subjects were trained to bite at maximum and half-maximum biteforce using an anterior jig incorporating a force transducer. Results: No consistent condylar displacement was observed in x, y and z axes between different biteforces although there was a trend towards superior displacement. Comparison of maximum intercuspal clench and maximum clench on a leaf gauge and an anterior jig produced significant decrease in anterior temporalis activity (p |
| Databáze: | OpenAIRE |
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