OBJECTIVE To assess rotation and translation movements of the mandible at maximum mouth opening in a group of patients successfully rehabilitated after condylar fractures. MATERIALS AND METHODS Using a three-dimensional motion analyser, free movements of mouth opening were recorded in nine patients, and divided into their rotation and gliding components. Surface electromyography (EMG) of the ...

INTRODUCTION The purpose of the study was to analyze whether adequate fracture fixation can be achieved by three-dimensional (3D) stainless steel mini-plates its ease of placement, whether the patient can resume function early and to find out the need to do intermaxillary fixation. MATERIALS AND METHODS In the prospective study, we treated 12 patients and 17 fractured sites using 3D mini-plat...

This study evaluated the effectiveness of interferential current stimulation (ICS) to decrease recurrent jaw pain and to increase maximum vertical jaw opening. Forty subjects with either a history of recurrent jaw pain of three months' duration or of constant, chronic jaw pain that recurred within the preceding two months participated in the study. Twenty subjects received three 20-minute treat...

Condylar fractures are the second most-common fractures of the mandible. The purpose of this study was to compare the surgical (open reduction+internal fixation) and nonsurgical (closed reduction+immobilization) treatment of mandibular condylar fracture in terms of occlusion and maximum mouth opening(inter-incisal distance of the jaws) after these two procedures. The study followed a prospectiv...

Through a transversal epidemiological study, conducted with 333 Brazilian children, males (157) and females (176), aged 3 to 6 years old, enrolled in a public preschool, this study aimed to evaluate the prevalence of the different types of vertical interincisal trespass (VIT) and the relationship between these occlusal aspects and anterior lisping and/or anterior tongue thrust in the articulati...

BACKGROUND Analyze the stress status of temporal-mandibular joint (TMJ) of a healthy volunteer under the overlarge jaw opening status through the finite element method, with the purpose of clarifying the loading features of each structure in the joint area, and achieving further understanding of the pathogenesis of the temporomandibular disorders (TMD). METHODS Collect the CBCT and MRI data o...

This study examines some intonational and rhythmical aspects of speech and their interactions. The intonational analysis framework is the ToBi system; the rhythmical analysis framework is based on patterns of jaw opening acoustically reflected by F2-F1 changes. According to recent studies on American English, contrastively emphasized mono-syllabic words, regardless of vowel height, have larger ...

PURPOSE The present investigation evaluated the relation between the dynamic properties of the bilateral condyle in habitual maximum opening and closing movement and the occlusal force balance with clenching force. METHODS Nine normal adults participated in this study. The translation of bilateral condyle and the rotation of intercondylar axis in habitual maximum opening and closing movement ...

The present study was performed on dental casts and lateral cephalometric films of 30 Caucasian Brazilian individuals (15 males and 15 females) aged 18 to 27 years and 4 months, all presenting normal occlusion and satisfactory facial profile. The aims were to investigate the existence of dental discrepancies according to Bolton's criteria, to obtain mean values for overbite, overjet, curve of S...

BACKGROUND Fabrication of complete dentures requires the use of certain guidelines which are placed on the bite blocks to assist the clinician to have the maxillary anterior teeth restored to optimal dento-labial relations, in harmony with the overall facial appearance. OBJECTIVE To explore if any relationship exists between dental and facial proportions as well as the height of the individua...