WITHDRAWN: Interventions for replacing missing teeth: denture chewing surface designs in edentulous people.

The Cochrane Oral Health Group withdrew this review as of Issue 12, 2015. The review is out of date and does not meet current Cochrane methodological standards. The editorial group responsible for this previously published document have withdrawn it from publication.

Complete dentures revisited.

Unlabelled: The aim of the article is to assist practitioners in the diagnosis and management of complete denture problems by addressing the problems from a theoretical viewpoint and in a clinically diagnostic way.

Clinical Relevance: To assist practitioners and undergraduates to understand the clinical basis of complete denture prosthodontics.

A contemporary update on 'soft' linings.

Unlabelled: This article presents a contemporary overview of soft or compliant denture lining materials. It does not focus on denture bases, which are intrinsically flexible, and suggests some clinical options which readers might wish to consider.

Clinical Relevance: The aim of this article is to update clinicians on the types of compliant linings currently available and to advise on how some might be used.

An update on the replica denture technique.

Unlabelled: This paper reviews the principles of the replica denture technique, including some of the techniques previously described. The failing of any previous technique to cater for specific support problems is brought to light and the remainder of the article is devoted to describing how the replica denture technique may be modified to treat patients more appropriately and, hopefully, result in better treatment outcomes.

Clinical Relevance: This article offers general dental practitioners a practical guide on how to adapt a useful denture replication technique to suit patients with denture-support problems.

Attachment of Candida albicans to denture base acrylic resin processed by three different methods.

Denture stomatitis is a debilitating disease associated with the presence of adherent Candida albicans. This study compared the attachment capacity of C. albicans to three different acrylic resin materials (self-curing [SC], conventional pressure-packed [CPP], and injection-molded [IM]) to determine whether the physical properties of the materials influenced candidal attachment.

Contemporary techniques for denture fabrication.

This article reviews the fabrication of complete dentures and presents findings of recent technological studies that have relevance to current complete denture practice. In addition, summaries of two recent randomized controlled studies demonstrate the need for more deliberate prescription of impression materials.

Colonization and deterioration of soft denture lining materials in vivo.

Colonization of denture lining materials by microorganisms including Candida albicans can result in deterioration of the material, as observed by a previous in vitro study by the authors. The current in vivo study monitored the microbial colonisation and penetration of five types of denture liners and their topography over six months. There was no significant difference in the microbial colonisation on the denture liners and no penetration observed, indicating a slower rate of deterioration of materials in vivo.

The shortened dental arch--an assessment of patients' dental health state utility values.

Objectives: The aim of this study was to determine how patients value the potential outcomes from different treatments for the shortened dental arch (SDA).

Methods: 110 partially dentate patients were interviewed and presented with illustrative models as well as a description of the process and likely outcome of six possible treatments for the shortened dental arch. The patients were asked to indicate on a standardised visual analogue scale how they would value the health of their mouth if they had received each of the treatments described.

Does the nature of the definitive impression material influence the outcome of (mandibular) complete dentures?

The effects of impression materials on the outcome of complete dentures are poorly understood. This double-blind cross-over randomized controlled trial investigated eleven adult edentulous patients. Each received a maxillary denture and three mandibular dentures (which differed only in the three materials used to record the definitive impressions).

A clinical investigation of the morphological changes in the posterior mandible when implant-retained overdentures are used.

Objectives: The widespread use and broad acceptance of osseointegrated dental implants as a means of retaining and supporting mandibular overdentures provide potentially stable three-dimensional reference structures, which have been used to examine the morphological changes of the surface contours of the mandibular ridges distal to implants. Unlike traditional methods that tended to measure changes in ridge morphology and quantity radiographically, this prospective study investigated the changes in the sagittal surface contours of the posterior residual ridges over a 1-year period by an alternative, non-radiographic method using serial casts of residual ridges of a group of patients.

Material And Methods: The residual ridges of the serial casts produced were examined using a profiling apparatus and computer software programs that allowed the orientation, digitised recording and measurement of the sagittal surface contours of the posterior residual ridges of mandibular casts in terms of area (cm(2)).

Systematic review of the evidence supporting intra-oral maxillofacial prosthodontic care.

The literature on maxillofacial prosthodontics may be considered to be dominated by articles describing case reports or case series. Prospective, well-controlled clinical trials are scarce owing to the inherent difficulty of performing such trials in patients suffering from oral cancer. The aim of this study was to perform a systematic review of the literature relating to intra-oral maxillofacial prosthodontics based on the principles of evidence-based dentistry.

Microbiological hazard analysis in dental technology laboratories.

Dental technicians are trained in a range of skills involved in the fabrication of prostheses used in the mouth and facial region. Items entering the dental laboratory are essentially inert materials which have been in contact with the patient's mouth, saliva, and possibly blood. Appliances leaving the laboratory are then returned to the clinician to be tried/inserted in the patient's mouth.

Mathematical analysis of tooth and restoration contour using image analysis.

Objectives: The aim of this study was to develop a methodology for comparison of the contour of artificial crowns in the mid bucco-lingual plane with their equivalent natural teeth on the opposing side of the same arch (antimeres) using a novel application of image analysis software. The objective was to determine whether artificial crowns were overcontoured.

Methods: Specimens consisted of thin sections of silicone putty impressions of the buccal and lingual surfaces of 55 full crown restorations and their natural antimeric teeth.

Prosthetic dentistry and the unilateral cleft lip and palate patient. The last 30 years. A review of the prosthodontic literature in respect of treatment options.

All cleft lip and palate patients are unique and present with their own diagnostic and prosthodontic problems. Many patients have benefited, recently, from alveolar bone grafting and orthodontic realignment and require little or no prosthodontic treatment. Some treatment, however, has been planned with a prosthesis as the final restoration, as a sizeable number of such patients have not undergone the alveolar graft procedure, (or this has been unsuccessful), or they were deemed to be unsuitable because of the extent of their defect.

Colonization and penetration of denture soft lining materials by Candida albicans.

Objectives: Colonization of denture soft lining materials by Candida albicans can result in clinical problems, and deterioration of the material. This study aimed to monitor this interaction by comparing the short-term adhesion of C. albicans to six denture lining materials and to monitor any longer term penetration of material by the yeast.

Understanding prosthodontics--where did it all go wrong?

This paper addresses the anatomical and physiological effects of tooth loss on the patient and, further, audits the teaching of prosthodontics over the last 30 years. There is an abundance of evidence to outline changes that occur post-extraction related to morphological changes in the maxilla, the mandible and combined changes in inter-maxillary relations. In addition to the knowledge of patterns of bone loss, we are also now well aware that there is evidence to suggest that planned retention of roots and/or the placement of implants can help reduce post-extraction bone loss.

Prevention of bone loss for edentulous patients.

This paper examines the consequences of being edentulous particularly on the intra-oral hard tissues. Short, medium and long-term studies of the overall post-extraction changes are reviewed and the bone loss that might be anticipated quantified. Following on from this, means by which bone loss may be prevented are reviewed.

A clinical overview of removable prostheses: 5. Diagnosis and treatment of RPD problems.

This, the fifth and final article in the series, addresses the diagnoses and treatment of problems which may arise following provision of removable partial dentures (RPDs). These include difficulties seating the denture, pain and discomfort, looseness and functional problems.

A clinical overview of removable prostheses: 4. Technological considerations when designing removable partial dentures.

This fourth article in a series concerning the prescription of removable partial dentures is a précis of the technical aspects of RPD construction, commencing with the definitive or 'working' impressions, although all impressions ought to be considered as 'working' impressions.

A clinical overview of removable prostheses: 3. Principles of design for removable partial dentures.

Removable partial dentures (RPDs) should not be made for patients unless they are necessary. Most partial dentures have the potential to cause some damage to the teeth and supporting tissues, however well they are designed and constructed; the criteria for selecting such devices were described in a previous article. In general there is merit in, wherever possible, reducing tissue coverage as much as possible when RPDs are being planned.

A clinical overview of removable prostheses: 2. Impression making for partial dentures.

This, the second article in a series on the prescription of removable partial dentures, will deal with the issue of primary impression and primary casts for partial dentures. The principles of definitive impressions and master cast planning will be described.

A clinical overview of removable prostheses: 1. Factors to consider in planning a removable partial denture.

This is the first article in a series on the prescription of removable partial dentures. It addresses basic clinical and patient-related factors involved in decision-making before commencing active prosthodontic treatment. Further papers will outline a variety of impression techniques for primary and definitive impression, discuss designing principles, give an overview of some technological aspects of removable partial denture-making and provide guidelines on how to diagnose and manage common clinical problems associated with removable partial dentures.

A clinical overview of removable prostheses: introduction.

This series of articles has been written with the intention of simplifying the processes involved in the prescription of removable partial dentures. The scene is set in this introduction, and the first article addresses basic clinical and patient-related factors involved in decision-making before commencing active prosthodontic treatment. The second paper will outline a variety of impression techniques for primary and definitive impressions, while the third discusses designing principles.

Factors that affect the adhesion of two irreversible hydrocolloid materials to two custom tray materials.

Statement Of Problem: Little evidence is available on the length of time that adhesive should be allowed to dry before irreversible hydrocolloid impression making.

Purpose: This study investigated the effect of adhesive drying times on the bond strengths of 2 irreversible hydrocolloid impression materials to 2 "custom" tray materials.

Material And Methods: A total of 1,632 specimens were tested: 816 in tensile tests and 816 in tests of the shear bond strength (megapascals) of 2 irreversible hydrocolloid impression materials to an autopolymerizing and a visible light-polymerizing acrylic resin tray material.

Oral stereognostic ability in edentulous and dentate individuals.

Oral stereognosis was analysed in a group of edentulous individuals who had been rehabilitated with conventional complete dentures and in a group of dentate subjects. The results showed that significant differences existed between the dentate and the edentulous individuals in shape recognition. Dentate individuals correctly identified test forms more often, and in a shorter time, when compared with individuals who had no natural teeth.