The relationship between non-working-side occlusal contacts and mandibular position.

No clear description can be found regarding the lateral position when examining non-working-side occlusal contacts. The objective of this study was to test the hypothesis that the non-working-side contact pattern varies with the mandibular position. The characteristics of the non-working-side contact pattern were also determined relative to the working-side contact pattern.

Characterization of the Streptococcus gordonii chromosomal region immediately downstream of the glucosyltransferase gene.

The Streptococcus gordonii glucosyltransferase gene, gtfG, is positively regulated by the upstream determinant rgg. In the present study, two ORFs, transcribed on the opposite DNA strand, were identified immediately downstream of gtfG. The first, designated dsg, shares a convergent putative transcriptional terminator with gtfG, and encodes a predicted 46 kDa transmembrane protein similar to the Yersinia enterocolitica TrsA involved in polysaccharide biosynthesis.

Different responses of masticatory movements after alteration of occlusal guidance related to individual movement pattern.

We hypothesized that the motor response of the masticatory system to peripheral inputs varies according to the functional potential of an individual. The specific aim of the present study was to determine whether individually different types of masticatory patterns, especially with respect to the closing movement pattern, would produce different motor responses to an alteration of occlusal guidance. The inclination of the occlusal guidance was steepened by approximately 10 degrees by attaching a metal overlay to the lingual surface of the maxillary working-side canine.

A comparison of image characteristics and convenience in panoramic radiography using charge-coupled device, storage phosphor, and film receptors.

This study compared the image layer characteristics, dose requirements, and convenience in use of panoramic radiography using each of four different image receptors including traditional indirect exposure x-ray film, a storage phosphor system, and two solid-state sensors. The OP 100 D (Instrumentarium Imaging, Tuusula, Finland) charge-coupled device (CCD) sensor provided an instant image with a wide focal trough, making patient positioning error unlikely, but at the same time required a patient dose higher than that used with film. While the DigiPan (Trex/Trophy, Marne-la-Vallée, France) CCD significantly reduced the patient dose to radiation and also provided an instant image, the focal trough was narrower making patient positioning error more likely.

The prevalence of periodontal disease and oral hygiene care in Savannakhet Province, Lao People's Democratic Republic.

The objective of this study was to evaluate the prevalence of periodontal diseases in Savannakhet Province, Lao PDR. This survey was conducted 14 years after the country reformed its economic structure towards the free market. Thirty villages were picked by simple random sampling from a total of 1,560 villages.

Extraoral maxillofacial prosthetic rehabilitation at the M. D. Anderson Cancer Center: a survey of patient attitudes and opinions.

Statement Of Problem: Measures of satisfaction after extraoral maxillofacial prosthetic rehabilitation have been sparsely reported.

Purpose: This article reviews the care-related opinions of patients who were provided extraoral prostheses at the M. D.

Fluoride analysis of human milk in remote areas of Thailand.

The objective of this study was to measure the fluoride content in human milk collected from mothers living in remote areas of Thailand and to correlate it with fluoride concentrations in drinking water and water for domestic use. Four to five ml of breast milk were sampled from mothers living in villages where schools under the jurisdiction of the Department of Border Patrol Police were located. The schools were sampled by Multiple Stratified Cluster Random Sampling.

Dietary fluoride intake of children aged 3-7 years in remote areas of Thailand.

The objectives of this study were to measure dietary fluoride intake in children aged 3-7 years, to correlate dietary fluoride and fluoride content in water for use in schools and to estimate fluoride gained from the daily diet. Fifty food samples were collected in 45 schools under the jurisdiction of the Border Patrol Police Department. The schools were sampled by multiple stratified cluster random sampling.

Studies on oral health in mentally retarded adults.

Unlabelled: During the last decades, a new policy involving normalisation, integration, equality and deinstitutionalisation of mentally retarded (MR) individuals has been accepted in Sweden. Consequently, many institutions have been closed and an increased number of people with MR are now integrated into the Swedish community. The general aim of this thesis was to investigate if a greater degree of independence for MR adults influenced the prevalence of oral diseases.

Biomechanical evaluation of osseous implants having different surface topographies in rats.

Biomechanical and biological factors can co-dependently influence the establishment of implant-tissue integration; thus, concurrent evaluation of these factors should provide a better understanding of osseointegration. This study aimed to establish and validate an in vivo rat model frequently used in molecular/cellular biology for implant biomechanical studies. We tested the hypotheses that the implant push-in test assesses the degree of osseointegration by the breakpoint load at the implant-tissue interface and that it sensitively differentiates between the effects of different implant surface topographies.

Fluoride in water consumed by children in remote areas of Thailand.

The objective of this study was to analyze fluoride content in water for drinking and for use in remote areas of Thailand. Water was sampled from schools and villages along the border by Multiple Stratified Cluster Random Sampling. Fluoride levels of 214 water samples from 48 schools and 48 villages were assessed in triplicate by fluoride ion electrode.

Fabrication of a surgical stent for bilateral tuberosity and mandibular alveolar reduction.

A technique for constructing a single surgical stent to direct bilateral preprosthetic maxillary tuberosity reductions and mandibular alveolectomies is presented. The stent is fabricated using unaltered articulated definitive casts. The stent allows the oral surgeon to replicate the desired vertical dimension of occlusion for a thorough assessment of the sufficiency of the surgical revisions.

Potential for load-induced cervical stress concentration as a function of periodontal support.

Purpose: The purpose was to determine, photoelastically, the locations of occlusal load-induced stress concentrations within a maxillary premolar as a function of degree of periodontal support.

Materials And Methods: Composite three-dimensional models of a maxillary first premolar were fabricated for quasi-three-dimensional photoelastic stress analysis. Individual materials were used to model enamel, dentin, periodontal ligament, and alveolar bone.

Passivity of fit and marginal opening in screw- or cement-retained implant fixed partial denture designs.

The relationship of stress generation upon placement of cement-retained or screw-retained implant restorations has not been thoroughly investigated. Passivity of fit and marginal discrepancies of screw- and cement-retained implant fixed partial denture (FPD) designs were determined using a photoelastic model of a partially edentulous posterior mandibular arch with 3 screw-type implants. Buccal and lingual marginal openings, measured with a traveling microscope before cementation or screw tightening, revealed no statistical difference in adaptation between designs.

Surgical exposure and orthodontic repositioning of an impacted mandibular premolar.

This article is intended to give an overview of mandibular second premolar impactions and a detailed description of treatment. Practitioners who possess a basic knowledge of oral surgery technique and comprehensive corrective orthodontic capabilities could successfully treat such an entity.

Treatment of gingival hyperpigmentation for esthetic purposes by Nd:YAG laser: report of 4 cases.

Gingival hyperpigmentation may cause esthetic problems and embarrassment, especially in patients with a gummy smile. This report presents the use of the Nd:YAG laser for gingival depigmentation. Four cases, 3 females and 1 male, ages between 24 to 28 years old, presented with the same chief complaint of unesthetic gingiva caused by melanin hyperpigmentation.

Restoration of partially edentulous patients using customized implant abutments.

The ideal placement of implants is not always possible in partially edentulous patients. The diverse and unique implant positions that occur in clinical practice may be difficult or impossible to restore through the use of conventional abutments. Customized abutments permit the fabrication of aesthetic restorations that correct deficiencies in implant angulation, alignment, and position.

Fracture resistance of four different restorations for cuspal replacement.

The purpose of this study was to compare the fracture resistance of four posterior restorations involving an entire cusp replacement. Four groups were established, each containing eight caries-free mandibular molars, similar in size and anatomic form. A mesio-occlusal preparation including the lingual cusp was prepared on all teeth.

Oral complications associated with immunosuppression and cancer therapies.

The oral manifestations of oropharyngeal infection in immunocompromised patients present a particular challenge for both medical and dental professionals because clinical signs and symptoms may be minimal and accurate diagnosis and appropriate treatment may be difficult. Effective control of infection and management of oral symptoms are important and may be achieved by the judicious use of topical and systemic agents and by maintaining good oral hygiene. Prevention of mucosal breakdown, suppression of microbial colonization, control of viral reactivation, and effective management of severe xerostomia are all critical steps to reduce the overall morbidity and mortality of oromucosal infections in the severely immunocompromised patient.

Principles and practice of antibiotic therapy.

The oral cavity and surrounding structures harbor an extremely complex array of microorganisms. As a result, when structures become acutely or chronically infected, diseases can present very differently. Surgical and pharmacologic management decisions become equally complex, depending on the source site of the infection and the areas to which it spreads.