With the newly developed dynamic jaws technology, radiation dose for the cranio-caudal edges of a target can be lowered in the treatment with tomotherapy. We compared dynamic-jaw- and fixed-jaw-mode plans for lung cancer. In 35 patients, four plans using the 2.5-cm dynamic-, 2.5-cm fixed-, 5.0-cm dynamic-, and 5.0-cm fixed-jaw modes were generated. For 10 patients with upper lobe stage I lung c...

Problem statement: Jaw movement analysis, as a clinical aid, can provide an objective basis for understanding and diagnosing jaw musculoskeletal disorders. Therefore, the use and development of devices for quantitatively measuring and analyzing jaw movement have become more common and popular in the clinic. Many types of jaw tracking devices have been developed, but most of them are still not h...

STATEMENT OF PROBLEM Composite mandibular resection resulting in mandibular discontinuity can alter jaw motion, occlusal forces, and mastication, whether or not the jaw is reconstructed. The biomechanical events associated with these changes are difficult to assess clinically and, therefore, are not well documented or researched. PURPOSE The purpose of this study was to model movements of a m...

Osteonecrosis of the jaw may be caused by many different triggers. One of them is described to be the drug or medication related osteonecrosis of the jaw. Since many years bisphosphonates induced the dreaded diagnosis. Recently a drug named denosumab is reported to show similar effects on the jaw. In this case report we present a RANK-Ligand inhibitor associated osteonecrosis of the lower jaw a...

The clinical features, differential diagnosis and treatment of unilateral spasms of the jaw and masticatory muscles are discussed and illustrated by eight cases of unilateral jaw spasms of various aetiologies. These include focal dystonia of the jaw, hemimasticatory spasm with and without facial hemiatrophy, paroxysmal events in multiple sclerosis and tetany. Attention is particularly drawn to ...

STATEMENT OF PROBLEM Understanding is needed regarding the effect that occlusal interferences have on the teeth, periodontium, and especially on jaw function. PURPOSE This article summarizes research in which experimental occlusal interferences have been placed on the teeth of animals and human volunteers. MATERIAL AND METHODS Data from 18 human and 10 animals studies were reviewed. Experim...

a 22-year-old man presented with exertional dyspnea commencing one month prior to his admission. echocardiography revealed a non-homogenous mass, and the pathology examination of the pericardial biopsy was compatible with angiosarcoma.

Gorlin-Goltz syndrome (GGS) also known as Nevoid Basal Cell Carcinoma Syndrome is a rare autosomal-dominant disorder characterized mainly by the presence of multiple basal cell carcinomas (BCC), odontogenic keratocysts of the jaw and palmar pits. This syndrome is associated with a wide spectrum of developmental anomalies and neoplasms. A case of familial Gorlin-Goltz syndrome with many of the c...

The unwanted radiation transmission through the multileaf collimators could be reduced by the jaw tracking technique which is commercially available on Varian TrueBeam accelerators. On the basis of identical plans, this study aims to investigate the dosimetric impact of jaw tracking on the volumetric-modulated arc therapy (VMAT) plans. Using Eclipse treatment planning system (TPS), 40 jaw-track...