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At least 1,099 records · Page 61Linked to original sources
PubMed1997

Endodontic pathology leading to implant failure--a case report.

This case report documents both the placement of a single implant into an alveolar ridge site and the failure of the implant due to bacterial contamination from an endodontic lesion. After placement of the fixture using osteotomes, the adjacent bicuspid developed periapical pathology following prior crown preparation. This root-end inflammatory process proceeded to involve the mesial surface of the implant. Although endodontic therapy on the devitalized tooth was performed within one week, an osteitis developed around the implant. One month after placement, the fixture had to be removed to prevent additional sequela. The osteotomy site appeared to heal uneventfully, allowing for the placement of a tooth-supported, fixed, partial prosthesis.

Combined Modality Therapy↗
PubMed1997

Restoration of endodontically treated teeth: a guide for the restorative dentist.

This article provides a decision flow chart that can serve as a guide to selecting the optimum restorations for endodontically treated teeth. The process begins with an assessment of the endodontically treated tooth to determine its restorability. The restorable tooth is then evaluated for the amount of remaining coronal tooth structure. Anterior teeth with minimal or moderate coronal damage do not require complete coverage or a post and core. However, anterior teeth with significant coronal damage will require complete coverage plus a post and core. Posterior teeth with minimal coronal damage may be treated conservatively with partial-coverage restorations. For posterior teeth with moderate damage and those with curved roots, amalgam or resin composite foundations are used to support complete-coverage restorations. Posterior teeth with significant coronal damage require a post and core and a complete-coverage restoration.

Decision Trees↗
PubMed1994

Endodontic implications of anatomical variations and developmental anomalies in maxillary and mandibular anterior teeth.

Endodontic treatment of maxillary and mandibular anteriors does not generally offer strenuous challenges to the skilled practitioner. Most cases are relatively straightforward and can be treated without complication. Anatomical and developmental variations do exist in these teeth, however, which can add an enormous degree of technical complexity, and even doom endodontic treatment to failure. The prudent clinician must be aware of these variations, modify treatment procedures accordingly, and inform the patient of these possible causes of treatment failure.

Cuspid↗
PubMed1997

Endodontic microsurgery and the surgical operating microscope.

Many clinicians have benefited from using surgical telescopes and headlamps to enhance the visual access of clinical procedures. Historically, the surgical operating microscope has provided opportunities for the medical community in the development of new treatment strategies. Recently, the operating microscope has been introduced into the endodontic community, and its benefits in surgical endodontics have become widely known. Cases that once seemed impossible can now be treated with a high degree of confidence and clinical success. This article describes the advantages of the surgical operating microscope.

Apicoectomy↗
PubMed1994

Endodontic canal preparation: breakthrough cleaning and shaping strategies.

It could be said that cleaning and shaping is a game and, as such, can be played at various skill levels producing a range of endodontic results. Breakthrough cleaning and shaping strategies elevate the level of play by creating clean preparations that have been designed, sculpted, and shaped to flow and grace within. Excellence in canal preparations is an opening for packing the root canal system in three dimensions and increases the possibility of generating successful outcomes. Visualizing and executing great play moves the clinician toward mastery and winning the inner game of endodontics.

Dental Disinfectants↗
PubMed1996

A fiber composite laminate endodontic post and core.

The goals of endodontic post and core procedures are to provide maximum retention of the post and resistance to fracture of the roots. Presented is a recently developed fiber composite laminate (FCL) post and core technique which results in a bonded structure that is conservative, morphologic, retentive, versatile, esthetic, and helps resist root fracture. To ascertain the durability of FCL posts and cores, an in vitro pilot study with stress testing is included. The results of the study are compared to other post and core materials to show how well this technique approaches the ideal characteristics for endodontic post and cores.

Bisphenol A-Glycidyl Methacrylate↗
PubMed1998

Failure of apicoectomy surgery and successful endodontic retreatment.

The optimal way to address endodontic failures is to retreat the root canal system first and only then to consider apical surgery. Unfortunately, in practice, it is often not done in this way. Patients are subjected to apical surgery, without any attempts at retreatment. A series of cases is presented illustrating failures of apicoectomy and successful endodontic retreatment.

Apicoectomy↗
PubMed1998

Comparison of two endodontic handpieces during the preparation of root canals in extracted human teeth.

This in vitro study compared and assessed two endodontic handpieces during the preparation of root canals in extracted human teeth. Eighty extracted human teeth, with single root canals, were divided into eight matched groups. They were prepared using Shaper files activated by the MM1500 Sonic Air handpiece (Micro-Mega, Besançon, France) or Excalibur files activated by the W & H Excalibur 969 handpiece (W & H, Bürmoos, Austria). The files were 21 mm or 25 mm in length. When preparing the canals, the files were used either in line with or perpendicular to any canal curvature. Preparation of the canals was carried out using the techniques described in the manufacturers' literature. A variety of parameters were used to compare the handpieces, including canal preparation time, deformation or fracture of instruments, loss of canal length, weight loss from the prepared teeth and the overall postpreparation canal shape. A microradiographic technique was used to produce a tracing record of the pre- and postpreparation canal shape. Both handpieces provided an efficient and easy method of preparing and shaping the root canal with little operator fatigue. The MM1500 Sonic air handpiece took significantly more time (P < 0.001) to prepare the canals than the Excalibur. Few aberrations in the shapes of prepared canals were created by either handpiece. No endodontic file fractured but a few of them were permanently deformed. The effects of two variables--file length and the plane of use of the file--on performance of the handpieces, were also assessed.

Dental Instruments↗
PubMed1998

Predictably restoring endodontically treated teeth.

Endodontically treated teeth can be restored with a wide range of techniques of varying complexity. This paper presents a straightforward technique for the restoration of endodontically treated teeth that meet certain standards. Criteria are provided for the utilization of crowns, composite resins, cast gold post cores, amalgam or composite build-ups, and passive, parallel, small diameter stainless steel posts to restore these teeth. Consideration is given to ferrule design and its importance in achieving success.

Dental Cements↗
PubMed1998

Endoesthetics. Rehabilitation of the endodontically treated tooth.

This article discusses the restoration of the endodontically-treated tooth as it relates to infrastructure and superstructure. Like any structure, it is only as sound as the base upon which it rests. The combination of endodontics and sophisticated developments in adhesive dentistry are considered in the attainment of predictable clinical success.

Adhesives↗
PubMed1986

Stresses induced by endodontic stabilizers.

The force transmission of tapered, smooth-sided and parallel, threaded-sided single-crystal sapphire endodontic stabilizers was studied and the conclusions were: The stabilizer designs provided substantial fixation of the periodontically compromised model teeth and reduced tooth mobility from 3 to 0. Both stabilizer designs dramatically improved the stress distribution in the supporting structures caused by applied loads. The most distinct and highest intensity of stress concentrations were observed in the models immediately after insertion of the stabilizer. Stresses were reduced with the presence of the fibrous tissue simulation. The most favorable stress distributions were demonstrated, irrespective of configuration, in the models representing full bone-stabilizer encapsulation.

Biomechanical Phenomena↗
PubMed1988

Evaluation of the retention of endodontic implants.

The study investigated the retentive strength of endodontic implants measured by forced removal (pull-out or push-out tests) as a function of implant design and cement type. Smooth-tapered, threaded, and an innovative porous-surfaced implant were evaluated. Specimens were cemented in single-rooted human teeth with five different cements: zinc phosphate, polycarboxylate, glass ionomer, silicophosphate, or AH-26. The results indicated superior retention for the threaded and porous-surfaced implants, and stronger retention with glass-ionomer and AH-26 cements.

Bismuth↗
PubMed1991

A new endodontic stabilizer implant device.

A new endodontic stabilizer implant device is presented that can be used immediately after enucleation of large periapical cysts. The force transmission characteristics of this implant were evaluated by means of photoelasticity. The implant served to distribute incisal forces within the supporting structure. Improved stress conditions resulted at the tooth apex and between the apex and the superior border of the implant when the tooth was subjected to apicoectomy.

Apicoectomy↗
PubMed1980

Precision measurement control in endodontics.

A technique for measurement control in endodontic therapy is presented. The technique, which involves the use of a 10 mm segment of plastic ruler mounted on the end of a mirror handle, eliminates the inaccuracies associated with rubber stops and other devices used for measurement control. It gives the dentist precision control of instrumentation, which is vital to the development of a dentinal matrix at an optimum position.

Calibration↗
PubMed1992

Failure of an endodontic implant. Complications of removal and treatment.

The principal goal in the development of endodontic implants is to improve the stability of periodontally and traumatically compromised teeth. When excessive forces exist and periodontal conditions are suboptimal, however, the system breaks down and ultimately fails. We report such a failure, a sequela of which contributed to subsequent fracture of the mandible. The patient's hospital course and complications of treatment are discussed.

Bone Plates↗
PubMed2006

The outlook for implants and endodontics: a review of the tissue engineering strategies to create replacement teeth for patients.

Ideally, root canal therapy involves the removal of diseased pulp tissues and permanent replacement with healthy pulp to revitalize teeth. Rather than placing implants, the ideal solution is to grow new replacement teeth. Success rates of implants and endodontic treatments can exceed 90%, which presents a formidable challenge to tissue engineering researchers to ensure that future dental treatments are even more successful. The purpose of this article is to explain how tissue engineering can be used to create replacement teeth. The science of tissue engineering has evolved from growing simple tissues in cell culture incubators to a multistep process. Although the problems of introducing tissue engineering therapies as part of routine dental treatments are substantial, the potential benefits are equally ground breaking.

Biomimetic Materials↗
PubMed2005

Bone morphogenetic proteins in dentin regeneration for potential use in endodontic therapy.

The human dentition is indispensable for nutrition and physiology. The teeth have evolved for mastication of food. Caries is a common dental problem in which the dentin matrix is damaged. When the caries is deep and the dental pulp is exposed, the pulp has to be removed in many cases, resulting ultimately in loss of the tooth. Therefore, the regeneration of dentin-pulp complex is the long-term goal of operative dentistry and endodontics. The key elements of dentin regeneration are stem cells, morphogens such as bone morphogenetic proteins (BMPs) and a scaffold of extracellular matrix. The dental pulp has stem/progenitor cells that have the potential to differentiate into dentin-forming odontoblasts in response to BMPs. Pulpal wound healing consists of stem/progenitor cells release from dental pulp niche after noxious stimuli such as caries, migration to the injured site, proliferation and differentiation into odontoblasts. There are two main strategies for pulp therapy to regenerate dentin: (1) in vivo method of enhancing the natural healing potential of pulp tissue by application of BMP proteins or BMP genes, (2) ex vivo method of isolation of stem/progenitor cells, differentiation with BMP proteins or BMP genes and transplantation to the tooth. This review summarizes recent advances in application of BMPs for dentin regeneration and possible use in endodotic therapy.

Animals↗
PubMed1978

The uses of endodontic implant stabilizers in posttraumatic and periodontal disease.

Use of the endodontic implant stabilizer presents a sound physiologic procedure for stabilizing mobile teeth. It can increase root length, alter rootcrown ratios, immobilize fractured roots and periodontally compromised teeth, or supply combinations of these benefits. Case selection, operative technique, and case reports with follow-up are presented in order to demonstrate uses and versatility.

Cellulitis↗