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At least 469 records · Page 26Linked to original sources
PubMed1989

Incisal and occlusal tooth wear and wear of some prosthodontic materials. An epidemiological and clinical study.

In the epidemiological studies of this thesis, the aims were to elucidate the prevalence of incisal and occlusal wear in a normal Swedish population, and to present factors related to incisal and occlusal wear in that population. In the clinical studies, the aims were to develop methods for and to perform in vivo studies of wear of prosthodontic materials and to present quantitative and qualitative data of occlusal contact wear in these materials. The epidemiological part of this study consisted of 585 randomly selected dentate individuals from the Community of Jönköping, Sweden, who in 1983 reached the age of 20, 30, 40, 50, 60, 70 or 80 years. The results showed that the severity and prevalence of incisal and occlusal wear increased with age. Men presented more teeth with occlusal wear than women. An individual tooth wear index (IA), with the potential to rank individuals with respect to incisal and occlusal wear, has also been introduced. Factors which were found to correlate significantly to increased incisal and occlusal wear were: number of teeth, age, sex, occurrence of bruxism, use of snuff and the saliva buffer capacity. From the in vivo studies, data of occlusal contact wear of gold, porcelain and some resin based materials in four different persons, with earlier histories of occlusal wear of teeth and/or restorations, were presented. The in vivo models combined two methods: removable segments or double crowns, and a replica technique. The combination of a polyvinylsiloxane impression material (President) and an epoxy resin (Metapox) was chosen for the replica model technique. All materials tested showed increased wear rate when the opposing material was porcelain. Gold and porcelain showed equal wear resistance when opposing porcelain. The resin-based materials showed at least a three to four times higher wear rate. No difference in wear resistance could be observed between gold type III and type IV. Gold showed a combined abrasive and fatigue type of wear and porcelain mainly a fatigue type of wear. The resin-based materials showed a fatigue type of wear, sometimes in combination with a tribochemical reaction.

Adult↗
PubMed1989

[Maxillofacial prosthodontics. Its possibilities and limitations].

The maxillofacial prosthodontist acts primarily as a member of the head and neck oncology team. Using special methods and techniques, and more or less specific materials, speech, chewing, swallowing and facial expression are to be regained as good as possible. Due to the complexity of several orofacial functions, surgical or prosthodontic rehabilitation cannot always be accomplished.

Dentures↗
PubMed1987

Anterior guidance and aesthetics in prosthodontics.

Aesthetic determinants in prosthodontics are related to imprecise and often vague objective and subjective factors. Anatomic and functional studies indicate parameters of form, position, and contour of anterior teeth and the incisal guide angle. The final aesthetic composition is best determined by a continuing, ongoing evaluation designed to help the patients actively develop a perception of their own self-image and aesthetic potential. Incisal guide factors are determined independently of condylar elements. The final occlusal scheme is developed and coordinated with both the condylar and incisal guide elements.

Biomechanical Phenomena↗
PubMed1986

Prosthodontics. Diagnostic, treatment planning, and prognostic considerations.

The prosthodontic rehabilitation of a patient is usually the culmination of a patient's dental treatment. In order to maximize the prognosis, it is necessary to understand the patient, to make a thorough diagnosis, to coordinate the restoration with the other disciplines of dentistry, and to be knowledgeable of the spectrum of treatment modalities available.

Aged↗
PubMed1986

Prosthodontics. Urgent care.

There are an infinite number of responses to prosthodontic urgent care situations. A knowledge of acrylic resins combined with imagination and a clear understanding of the patient's chief complaint will allow the dentist to respond in an effective manner.

Dental Abutments↗
PubMed1984

Recent knowledge gained from long-term observations in the field of prosthodontics.

Both cross-sectional and longitudinal studies have contributed data which provide a scientific basis to the prediction of outcome in prosthodontic treatment. 'Standard' cases have a more favourable and more predictable prognosis than those in which tooth loss is scattered about the mouth. However, the variability of patients' problems and the wide range of their abilities to adapt to denture wearing and the regular maintenance of their oral tissues significantly influence outcome. Long term success with partial prostheses lies in the time scale of 5-10 years. A prerequisite for this is a standard of oral hygiene better than practised before the loss of the dentition. Adverse factors are inadequate diagnosis and treatment planning, undetected errors in denture construction, failure of materials, thermal and abrasive effects of foods, behavioural changes in the patient and ageing. In planning the restoration of abutment teeth by inlays or crowns their suitability for attachments must be considered. As yet, there are no clear guidelines to determine when fixed or removable prostheses should be used. The design of partial dentures should be as simple as possible; they should be stable, easy to clean and, if required, easily modified. Success is most likely to attend the efforts of those dentists who use techniques with which they and their technicians are thoroughly familiar.

Adult↗
PubMedDate not supplied

Prosthodontic and surgical considerations for pediatric patients requiring maxillectomy.

The quality of treatment and rehabilitation for the head and neck cancer patient, especially the pediatric patient, has progressed markedly over the years due to the cooperation of specialists involved in the total care of the patient. Defects of the oral cavity caused by trauma or removal of malignant or benign tissue require special treatment considerations with the pediatric patient. Aside from radiation and chemotherapy, other forms of adjuvant therapy, such as physical therapy, and patient and family counseling, are needed for proper rehabilitation. In addition, oral hygiene is essential in the overall rehabilitative process. Pediatric dental, orthodontic, prosthodontic, and oral and maxillofacial surgery specialties become integrated in treating the pediatric patient. The concentrated multidisciplinary treatment reduces post-treatment morbidity by shortening recovery and immediate rehabilitation time and by providing long-term care during the critical growth period.

Adolescent↗
PubMed1994

Prosthodontic rehabilitation in the maxilla following treatment of oral cancer.

This is the second in a two-part series on oral cancer. Part 1 focused on the surgical aspects of treatment and morbidity associated with oral cancer. In this article aspects of prosthodontic management of patients with maxillary tumours are considered, with emphasis on promoting optimal rehabilitation.

Dental Prosthesis Design↗
PubMedDate not supplied

Physical properties of fixed prosthodontic, resin composite luting agents.

This study determined and compared physical properties of six fixed prosthodontic resin composite luting agents and one control. Inorganic filler content, compressive strength, diametral tensile strength, film thickness, and Knoop hardness were determined. The amounts of filler and the physical properties varied widely among materials. One material, which contained a minimal amount of filler, underwent so much plastic deformation that its strengths could not be measured. All other materials demonstrated high strengths. The materials with the least filler demonstrated the least resistance to indentation. The material with the lowest film thickness had not set at the time of measurement, 10 minutes after mixing. Most materials had unacceptable film thicknesses. Only one material demonstrated acceptable physical properties throughout the study.

Analysis of Variance↗
PubMedDate not supplied

Relationship between prosthodontic status, caries, and periodontal disease in a geriatric population.

This study evaluated the influence of prosthodontic status on caries a and periodontal disease in a hospitalized population of elderly people. Among the data gathered was information on caries, gingival condition, oral hygiene, plaque accumulation, and factors related to the prevalence, type and quality of the prostheses present. There was no significant association between the type of rehabilitation and the economic, social, or educational variables, but it appeared that removable partial denture wearers had less concern for oral health. Root caries and periodontal diseases were more frequent when the restoration, either fixed or removable, was defective. Th results of this study indicate the importance of oral hygiene instruction and regular recalls among removable partial denture wearers.

Aged↗
PubMed1994

The endalveolar crest: anatomic and prosthodontic considerations of an overlooked mandibular landmark.

Surgical and prosthodontic treatment of edentulous patients have confirmed the presence of a seldom-described crest of bone situated above and distal to the mylohyoid ridge of the mandible. This study aimed to establish the frequency of occurrence and range of expression of the feature, which it is suggested should be called the endalveolar crest in humans and other primates. Evidence of the crest was noted in all specimens examined although the expression varied. Dissection of fresh and preserved cadavers indicated that the crest provided attachment for part of the superior constrictor muscle and that it may also afford some protection to the lingual nerve in the retromolar region.

Alveolar Process↗
PubMed1996

Prosthodontic appliance for repair of an oronasal fistula in a cat.

A 4.5-month-old Himalayan cat was evaluated because of a cleft secondary palate. Multiple surgical procedures failed to provide soft-tissue coverage of the defect. A 3-cm silastic nasal septal button was trimmed and placed in the oronasal fistula. This prosthodontic appliance provided obturation of the defect without the need for removal or cleaning. Food accumulation between the appliance and oral mucosa was minimal, avoiding the need for appliance manipulation. The owner reported clinical signs related to oronasal fistula or appliance complications were not evident 12 months after placement.

Animals↗
PubMed1995

Fixed prosthodontics: avoiding pulp death.

Fixed prostheses & crowns have become a major part of dental services due to aging population & increase in retention of natural teeth. In some practices, alarming numbers of endodontic procedures are necessary because of pulp damage after prosthesis cementation. Third party payment companies show many teeth receiving crowns require endodontic therapy within 5 years. Following report describes: (1) 14 potential causes of endodontic need related to fixed prosthodontics; & (2) state-of-art concepts to prevent pulp damage.

Crowns↗
PubMed1996

Immediate provisional and long-term anterior prosthodontics: a comprehensive approach.

The success of any anterior prosthodontic restoration depends on many factors. Considering those multiple influences during treatment planning can profoundly affect the long-term success of such cases. Comprehensive dental care involves evaluating all available restoration options for treating any given patient's condition. The dentist is obligated to present all of these options to the patient without bias. The following case reports provide a perspective from which decision-making occurs before treatment planning is accomplished.

Adult↗
PubMedDate not supplied

Prosthodontic treatment, patient response, and the need for maintenance of complete implant-supported overdentures: an appraisal of 5 years of prospective study.

The prosthodontic methods and outcomes of treating 127 patients in nine centres over a period of 5 years is described. The benefits perceived by patients and the changes induced in the denture-bearing tissues and temporomandibular joints are reported. To sustain effective treatment outcomes, the levels of maintenance needed by the overdentures are contrasted for restoration of the edentulous mandibles and maxillae.

Alveolar Bone Loss↗
PubMed1997

Prosthodontic and periodontal considerations for implant-supported dental restorations.

In the past two years, many reports concerning the outcome of treatment using dental implants have included more detailed data which allow insight into prosthodontic and periodontal considerations that affect success. It has become evident that unique biomechanical sequelae reflect the screw-joint character of the dental implant prosthesis. The relative stability of the screw joint and the biomechanical integrity of the components and prostheses themselves are new issues to contend with for restorative dentistry. The biologic sequelae of maintaining the implant-supported prostheses are revealed by bone maintenance and peri-implant mucosal health. The microbiologic similarity of tooth and implant-associated plaque at inflamed sites suggests that infected teeth are sources of potentially pathogenic bacteria at implants. However, the pathogenesis of inflammatory disease at implants is not fully defined. The evaluation and prognostic criteria of peri-implant inflammation remain controversial topics. The present aggregate data indicate that the long-term evaluation of implant-supported dental prosthesis must be performed with cautious optimism and attention to general biomechanical and biologic factors.

Dental Implants↗