An amalgam and composite resin splint for posterior teeth

A combined amalgam and composite resin splint was constructed for a 35-year-old man with pathologic tooth mobility. This type of stabilization was selected because of the poor prognosis, economic considerations, and poor alignment of the teeth. Amalgam restorations were inserted with strong contacts. Composite resin material was used to fill the channel cut through all amalgam restorations and reinforced with braided stainless steel wire. The poor alignment of the teeth would have caused other types of splints to fail.     

Pin-retained composite resin cores for posterior teeth

Two techniques for the fabrication of pin-retained composite resin cores for posterior teeth have been described.The advantage of using a composite resin in place of amalgam as a core material is that the restoration can be completed in a single appointment rather than the two appointments required when amalgam is used.A disadvantage of the use of the composite resins as core material is the difficulty in identifying the demarcation line between the resin and tooth structure. This lack of definition presents the possibility of placing the finish line of the final preparation on the resin rather than on sound tooth structure. Application of a Dycal demarcation bead or use of the ultraviolet light-activated resin offers a solution to this problem.     

复合树脂直接粘接修复Ⅴ.后牙直接粘接修复

后牙承担着较大的咀嚼咬合力,修复后牙龋坏或牙体缺损时,要均衡考虑材料的机械强度和耐磨性.银汞合金充填修复术操作简便,材料的机械性能好,被广泛应用于后牙龋损修复已有百余年,取得了良好的临床效果,但存在牺牲部分正常牙体组织以获得固位和颜色不符合美观要求等缺点.20世纪70年代以来,复合树脂开始应用于牙体缺损修复,但多用于前牙区对美学要求高的病例.早期由于粘接系统和复合树脂性能的不足,临床上出现继发龋或粘接失败的病例很多,加之耐磨性差,较少用于后牙.     

A resin alternative for posterior teeth: questions and answers on dental amalgam

Amalgam has been used to restore cavities in posterior teeth for over 100 years, but formulations used today are different from those used a century ago. Amalgam restorations have been blamed for a number of problems, such as cusp fracture and higher rates of secondary caries. This article discusses these issues, along with possible toxic effects, in the light of current literature.     

Use of a posterior composite resin to restore teeth and support enamel: report of case

In selected cases in which appearance is important, a posterior composite resin may be used successfully to reinforce and restore a tooth with undermined, nonfunctional cusps. The restoration of teeth with compromised functional cusps is not recommended. Once the decision has been made to restore the tooth with a posterior composite resin, care must be taken to follow a technique to prevent problems after treatment that result from microleakage and contraction shrinkage.     

Direct composite resin restorations in posterior teeth

Direct adhesive composite resin restorations are being used extensively. A proper understanding of the technique and its indications has contributed to the widespread use of this restorative approach. Recent industrial developments brought novel technologies to dentistry including the introduction of nanofillers to the restorative procedures. This article reviews some features of this new type of composite resin, discusses its advantages over other materials, and presents an application technique for restoration of posterior teeth through a clinical case report.     

Resistance and retention as critical factors in silver amalgam restoration of endodontic posterior teeth. A clinical focus

The root canal therapy does not make sense if it is not going to be restored properly. Even though we must keep in mind all the steps necessary to build up any vital tooth, we should emphasize the retention and resistency due to the fragility of endodontically treated teeth and to the destruction of these teeth. Even though the use o silver amalgam has been often questioned, we still consider amalgam as a proper material of a good half worm life to build up endodontically treated posterior teeth. Resistency and retention were considered as the essential factors to achieve the integrity of final restorations. We have analyzed the remaining tooth structure, periodontal support, biomechanics properties of the most used restorative materials and the variations of the forces. The different opinions on the concepts and technics have been reviewed and the final practical conclusions discussed.     

A 5-year study comparing a posterior composite resin and an amalgam

Eighty class I and class II light-cured posterior composite resin restorations were compared with 43 class I and class II amalgam restorations during a 5-year period after placement. The results of this clinical study showed that both materials were satisfactory during the time period and that the only significant statistical differences are a poorer marginal integrity for the amalgam and a greater wear rate for the composite resin.     

Clinical evaluation of a composite resin system with a dentin bonding agent for restoration of permanent posterior teeth: a 3-year study.

This study evaluated the clinical performance of a visible light-cured small particle bimodally filled hybrid condensable composite resin system that included a dentin bonding agent compared with an amalgam alloy in class II restorations of permanent teeth. A total of 108 restorations were placed in 34 patients. Fifty-three composite resin and 55 amalgam restorations were inserted. Each restoration was evaluated immediately after placement and then on an annual basis for a 3-year period using the Public Health Service (PHS) criteria. In addition, the Moffa-Lugassy scale was used to measure the loss of material on the occlusal surface of these materials. One hundred percent of the resin and amalgam restorations were evaluated, measured, and reasons for replacement were recorded over the 3-year period. There was no significant difference (p greater than 0.05) in the clinical performance of the composite resin and the amalgam when evaluated by the PHS criteria. Analyses of wear at each of the three annual recall periods did not reveal any significant difference (p greater than 0.05) between the two restorative materials when measured by the Moffa-Lugassy scale.     

Chairside replacement of posterior teeth using a prefabricated fiber-reinforced resin composite framework technique: a case report

The fixed replacement of a single posterior missing tooth for those patients who cannot have either implants or conventional laboratory-generated fixed prostheses has always been a challenge to clinicians. The development of fiber-reinforced composites (FRCs) has opened up new possibilities of chairside treatment options to manage these types of clinical situations. Techniques using FRCs as frameworks with traditional restorative resin composites as veneering materials can provide chairside fixed prostheses that are esthetic and potentially durable, with minimal abutment tooth loss.
A clinical case is presented that will illustrate a novel concept for tooth replacement–the use of an FRC prefabricated framework–to allow for a single visit, chairside replacement of a missing molar. The assembly of the framework and the clinical steps used in the framework placement and pontic fabrication are shown in detail.     

Direct restoration of worn maxillary anterior teeth with a combination of composite resin materials: a case report

Tooth loss, alterations on tooth structure, and reduced vertical dimension are known to severely compromise the stomatognathic system. This case report describes the treatment of a patient who presented with an extremely worn maxillary anterior dentition with a loss of posterior support owing to the loss of almost all the posterior teeth, except the mandibular premolars. Provisional removable partial dentures were used to create an optimum maxillomandibular relationship and to provide restorative space prior to the restoration of the remaining teeth. This restoration was accomplished with a combination of layered hybrid and microfilled composite materials, which restored the maxillary anterior teeth to optimum esthetics and function.