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Biomedical subjects

P Briggs

Publications and source records attributed to P Briggs.

At least 37 records · Page 2Linked to original sources
PubMed1996

The single unit, single retainer, cantilever resin-bonded bridge.

Resin-bonded restorations have many advantages over conventional alternatives. Advances in adhesive technology together with a better understanding of the clinical function of such restorations have allowed resin-bonded bridges to play an important role in everyday clinical practice. This paper highlights the role and importance of the single abutment, single pontic cantilever resin-bonded bridge. Clinical experience might suggest that the cantilever design offers a viable alternative to other designs. Furthermore, the paper suggests that when cantilever resin-bonded bridges fail initially, re-bond often leads to predictable long-term success. Factors such as patient selection, abutment preparation, retainer design and the aesthetic limitations of resin-bonded bridges are also discussed. The authors can claim that further clinical studies are necessary to identify exactly what factors influence the success of cantilever and other resin-bonded designs.

Dental Abutments↗
PubMed1996

Eating disorders.

Explore the source record for details and available documents.

Anorexia↗
PubMed1996

Margin design for porcelain fused to metal restorations which extend onto the root.

A 90 degree shoulder is probably the most commonly used margin design for porcelain fused to metal (PFM) restorations. However, this design requires the removal of a significant amount of tooth tissue to provide a predictable restoration. This increases the risk of irreversible damage to the pulp, particularly if little tooth tissue is present, for example on exposed roots. In these situations more conservative designs, such as the 135 degree shoulder or deep chamfer, should be considered. Ideally these designs should be used with an all-metal margin since this is associated with the most predictable marginal seal. Where an all metal margin is aesthetically unacceptable a porcelain butt or subgingival margin can be considered. Newer techniques, such as resin bonded crowns, which minimise tooth destruction and provide acceptable aesthetics may be a viable alternative to traditional PFM restorations. Unfortunately, these newer techniques have not been evaluated long-term.

Crowns↗
PubMed1996

Restoration of a worn dentition using a double-veneer technique.

Restoration of dentitions affected by tooth surface loss has been a problem to the dental profession for many years. This problem is likely to increase as the population ages and retains more teeth into old age. This article describes a method of restoring teeth with non-carious loss of tooth tissue whilst conserving the remaining tooth tissue.

Aged↗
PubMed1996

Oral complications associated with sickle cell anemia: a review and case report.

Sickle cell anemia is a multisystem disease that can affect the oral region. This article reviews previously reported oral complications associated with this disease and describes the cause of these problems. A case history describes a patient with multiple oral problems after a sickle cell crisis. The diagnostic and management problems of this case are highlighted. The need for a multidisciplinary approach to the care of these patients is emphasized.

Acute Disease↗
PubMed1995

Endodontic failure--a problem from top to bottom.

Endodontically treated teeth are susceptible to bacterial contamination through exposure to oral fluids. It is crucial, therefore, that restorations placed during and after root canal therapy protect the root canal from oral contamination. This paper highlights the clinical steps necessary to reduce the risk of contamination in root-filled teeth.

Bacterial Infections↗
PubMed1995

Sickle cell disease: a diagnostic dilemma.

The case history is described of a patient with sickle cell anaemia who developed a unilateral infarct of the mandible following a sickle cell crisis. The interruption of the blood supply resulted in an anaesthesia of the inferior dental nerve and pulpal necrosis of otherwise sound premolar and molar teeth. The diagnostic and management difficulties of the case are discussed, and recommendations are made for treatment of such patients in light of the problems encountered.

Acute Disease↗
PubMed1995

Multiple agminated Spitz nevi: report of two cases and review of the literature.

Spitz nevus is most commonly a benign solitary lesion. Multiple lesions arranged in clusters (agminated) are very rare. Malignant degeneration has not been reported. Although spontaneous involution may occur, the nevi are frequently treated by surgical excision. We describe two preschool girls with multiple agminated Spitz nevi, and review the current world literature on multiple Spitz nevi.

Back↗
PubMed1994

Palatal inlays.

Explore the source record for details and available documents.

Composite Resins↗
PubMed1994

Case report: the use of indirect composite for the management of extensive erosion.

Erosive tooth surface loss due to acidic soft-drinks has been well documented. Unfortunately, the erosive danger, especially to young patients, of low calorie beverages seems less well appreciated. A clinical case is reported to highlight the problems that can occur with excessive exposure to such beverages. A method of restoring the damaged dentition using indirect composite is described. It is concluded that indirect composite may be particularly suited for the restoration of eroded dentitions, especially in young patients where aesthetics and repairability are important. Further clinical studies are necessary to assess the performance of these and other materials currently used in the management of erosive tooth wear.

Adolescent↗
PubMed1989

Consistent benefits for the system designer and the end-user.

Command languages which are internally consistent are said to be easier to learn. The level of consistency - or degree of user complexity - of any command language is usually defined using one of a number of formal grammars, and yet consistency need not be so rigorously defined. It is proposed that diagrams can provide a suitable meta-language with which to illustrate the consistent properties of any command set; and a particular type of diagram - the 'command wheel' - is described. Command wheels offer a number of advantages over formal specifications, being simple to construct and allowing more discretion in the design process. In a study of word-processor users, it was found that properties of command wheels allowed the accurate prediction of user's behaviour, both in terms of their on-line performance, and their subsequent ability to recall commands.

Journal Article↗
PubMed1988

Presuturing--a new technique for closing large skin defects: clinical and experimental studies.

We have developed a new technique termed presuturing for aiding in the closure of large skin defects which may have otherwise required a skin graft or flap. This technique is based on biomechanical properties of skin (creep, stress relaxation) which allow skin to stretch beyond its inherent extensibility. Presuturing is performed under local anesthesia and consists of plicating intact skin over the area of planned excision the night prior to operation. Experimental studies in a pig model showed the decrease in force required to close a standard-sized wound to be 40.1 percent less than control (p less than 0.001). Fourteen patients who underwent wide excision of skin lesions had their wounds presutured. All but one wound could be closed primarily without undermining. Presuturing seems to be an easy and clinically useful technique in aiding the primary closure of large defects.

Adult↗
PubMed1987

Hybrid biphenotypic acute leukemia with extreme hypodiploidy.

A patient diagnosed as having acute lymphoblastic leukemia (L2) relapsed 4 months later and was found to have morphologic and immunologic evidence of a biphenotypic hybrid acute leukemia. Chromosome analysis at relapse showed two abnormal clones, one with marked hypodiploidy and the other with exactly double the hypodiploid clone. It is considered that this is an example of a hybrid lymphoblastic/nonlymphoblastic leukemia with unique karyotype.

Adult↗