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PubMedDate not supplied

A prospective study to assess osseointegration of dental endosseous implants with the Periotest instrument.

Long-term studies have documented the successful treatment of edentulous and partially edentulous patients with titanium implants. However, the inability to identify some non-osseointegrated implants before occlusal loading is costly to practitioners and patients. This study followed all patients (n = 40) who had implants placed over a 6-month period. The Periotest instrument was used at Stage II surgery, final impression, prosthesis placement, and 6 and 12 months after occlusal loading to quantify mobility/lack of mobility of implants with conventional 1-piece temporary healing abutments in place. The positive predictive value was 64%. The Periotest instrument was able to identify non-integrated implants only when measured at Stage II surgery and 12 months after occlusal loading, 64% of the time. However, Periotest values recorded at Stage II surgery are not valid predictors of non-osseointegrated implants 12 months post-occlusal loading.

Adolescent↗
PubMed1995

Fixed provisional restorations for extended prosthodontic treatment.

During extensive and extended prosthodontic treatment, there is need for a durable esthetic fixed provisional restoration that can be easily modified as treatment is completed and that is cost-effective. The needed strength of provisional restorations can be underestimated, and the management of complex treatment is then more difficult and the prosthetic results less predictable. Knowledge of the criteria for treatment restorations and the adequacies of their construction is essential for the prevention of catastrophic failures, patient management problems, and compromised results. Many times in complex prosthodontic treatment, changes are needed in esthetics, the plane of occlusion, incisal edge position, lip support, and type of occlusion, or the soft and/or hard tissues need to be altered or grafted surgically. In addition, after first- and second-stage implant surgery and extractions, there is a need for immediate tooth replacement with extended time between prosthodontic treatments. These prosthodontic changes and challenges can be addressed with reinforced acrylic provisional restorations that are adequately cemented and retained during the interim stage of healing and treatment. In addition, the provisional restoration should serve as a guide for the final restoration while esthetics and phonetics are evaluated for patient acceptance. This article describes the materials used with an indirect technique for fabrication of an extended-treatment acrylic provisional restoration that uses an internal cast metal support system for strength. This support system consists of metal bands or copings with extensions into edentulous areas and that have been opaqued to neutralize the metallic color. A matrix of vinyl polysiloxane made from the diagnostic wax-up simplifies construction of the acrylic, resulting in a strong, ridged, yet esthetic result.

Acrylic Resins↗
PubMedDate not supplied

Fracture toughness testing of visible light- and chemical-initiated provisional restoration resins.

This in vitro study determined the fracture toughness of four classes of resin using wet and dry test environments, following 48 hours of wet storage. Two of the resins were light initiated, while the other two were chemically initiated. No significant difference in fracture toughness was detected for the wet and dry test environments using miniature compact tension specimens. The light-initiated, urethane dimethacrylate resin demonstrated a significantly higher fracture toughness than the poly(methyl methacrylate) resin.

Acrylic Resins↗
PubMed1991

[Clinical form of preparations and prosthetic restoration after hemisection and root amputation].

With the expand of periodontology and present tendency to preserve the teeth, are appear news line forms for our preparations (of fixed prosthodontics). After hemisection or root-amputation, we are found of prosthetic reconstruction problem. This one should have to respect some simple principles on account of characteristic contour form of tooth after surgery. It must be important to have good indications, perfect execution, and meticulous realisation of provisionally prosthetic.

Apicoectomy↗
PubMed1977

[Experience with titanium mesh as a temporary foreign material implant for the reconstruction of mandibular defects].

Restoration of a loadable mandible after extensive resections, defects or comminuted fractures, serious osteomyelitis and pseudarthrosis will be successful only if sufficiently stable fixation of the fragments and immobilization beyond the physiological period of bone healing are guaranteed. By means of various types of plates and extroral appliances for osteosynthesis the conventional methods have been improved, but failures and complications are still frequent. The treatment itself is a great strain for the patient. The titanium mesh implant system developed by Ph. Boyne and his group for reconstruction in mandibular defects means, in our opinion, an important therapeutical step forward. Its technical advantages and our own clinical experience advocate application of this system.

Dental Implantation↗
PubMedDate not supplied

The importance of the coronal seal following root canal treatment.

Although a plethora of research on coronal microleakage does not exist, the studies do confirm that a sound coronal seal is of paramount importance to the overall success of root canal treatment. Temporary restorations provide an adequate seal provided they are used correctly and only for a short time. The best rule of thumb is as follows: a properly cleaned, shaped, and obturated tooth should be permanently restored as soon as possible. If the clinician suspects coronal microleakage has occurred over a time period of 3 months or more, retreatment of the root canal should be performed before placement of a permanent restoration. The clinical significance of coronal recontamination over a time period of 1 to 3 months is more ambiguous; the existing conditions of each individual case will determine whether retreatment is necessary. Continued research, especially with in vivo models, is needed in this aspect of endodontics.

Dental Leakage↗
PubMed2003

[Therapeutic possibilities for multiple caries in children].

The exaggerated consumption of sugars under its various associate shapes to an insufficiency of mouth and tooth hygiene could drag some tooth decays. These tooth decays, when they demonstrate, leads to a destruction of the temporary teeth, with for corollaries of the aesthetic and functional problems. The therapeutic are not always apparent especially when there is coexistence of coronary destruction to juxtapose to the gum without reaching pulp with some precocious a toothlessing. The authors, across some cases clinics treated to the breast of service of Paediatric Dentistry shows different types of therapeutic possibilities in function of the shapes clinics. He was about conservative treatments or of extraction, of prothesis restorations to the aide of the Crown order form, of infantile removable prosthesis and of composite prosthesis.

Child↗
PubMed2005

Extraction defect assessment, classification, and management.

Tooth extraction is a traumatic procedure initiating a complex cascade of biochemical and histologic events that inevitably lead to a reduction of alveolar bone and soft tissue. These tissue alterations often lead to an esthetic compromise of the future implant restoration. The hard- and soft-tissue architecture surrounding the extraction defect largely dictates the course of dental implant treatment. The EDS or extraction-defect sounding classification is a novel system introduced to simplify the decision-making process when planning for dental implant therapy following tooth extraction. Dental implant treatment guidelines based on the EDS classification are discussed. A review of pretreatment evaluations necessary to prepare for esthetic implant procedures is also presented.

Alveolar Bone Loss↗
PubMed1994

Effect of dowel space preparation on the apical seal of root canal fillings.

The effect of post preparation on the apical seal was studied using simulated root canals. The maximum level of removal was tested with residual fillings 1, 2, 3, and 4 mm long. All of the artificial canals were filled with gutta-percha, Grossman's sealer, and lateral condensation. The removal was immediate and carried out with warm pluggers and the dowel space was completed with a Peeso drill. Stainless steel posts were cemented with zinc phosphate cement in the free space of the root canals. The coronal access of the canals was sealed with temporary fillings. After setting the materials, the specimens were immersed in a 2% methylene blue dye solution for 72 h and were observed with a measuring microscope. The final length of the apical fillings was found to be different from the intended length in every group. As far as leakage was concerned, 1, 2, and 3 mm-long fillings did not show a significant difference when compared with the negative control group (that is to say, filled canals where no dowel space was created). In the 4 mm fillings the leakage value was zero. These findings may be of clinical importance when restoring short roots.

Dental Leakage↗
PubMed1999

[Considerations of single tooth replacement. The choice between different treatment options].

When a single tooth is lost both functional and aesthetic aspects have to be restored. A fixed prosthodontic restoration such as a conventional bridge, a resin-bonded bridge or a solitary implant is the treatment of choice. The final choice between these three treatment modalities strongly depends upon specific characteristics in the patients' dentition and his preferences. There is a vast amount of clinical experience with the conventional fixed bridge and it is available in every dental office. Without a doubt the resin-bonded bridge is the cheapest option. However, the patient does run the risk of loosening of the bridge, usually at an inconvenient moment. It then has to be recemented or replaced. The solitary implant has several advantages over the fixed and resin-bonded bridge. For optimal results, it does require a physician with a vast experience in the field of oral implantology. For young individuals closure of the diastema by means of orthodontics is also possible. A partial denture is only an option as a temporary provision or when more teeth were lost or are bound to be lost.

Dental Implants, Single-Tooth↗
PubMed2004

Influence of occlusal height for an implant prosthesis on the periodontal tissues of the antagonist.

The purpose of this study was to investigate a suitable occlusal height for an implant prosthesis by examining the responses of the periodontal tissues around a natural antagonist. The subjects were three Japanese females with two posterior missing teeth restored by ITI system implants (Straumann). Two kinds of experimental implant prostheses were adjusted as follows; one was adjusted in heavy clenching (HC), and the other was adjusted in light clenching (LC). The periodontal pulsation, displacement during biting an occlusal force meter and the mobility of the antagonist were measured before and one week after temporary cementing HC and LC, and one week after removal. In each prosthesis, there was no significant difference in the amounts of the pulsation and mobility of the antagonist before and one week after cementing, and one week after removal (p>0.05). The displacement of the antagonist during biting the occlusal force meter did not change much during the conditions. The results of this study suggested that an implant prosthesis adjusted not only under heavy clenching but light clenching like crown restorations for natural teeth did not affect the periodontal tissues of the antagonist in a harmful manner.

Adult↗
PubMed1993

Flexural strength of provisional restorative materials.

A provisional restorative material must be strong enough to resist fracture during function. This study tested five autopolymerizing provisional resin materials under conditions that related the stresses acting on them to those acting on a fixed partial denture. The highest values for fracture resistance were displayed by Snap poly(ethyl methacrylate) material. However, two of the 11 samples of this material displayed markedly lower values for fracture resistance. This finding warrants further investigation, because inconsistency had clinical implications. In decreasing order, the fracture resistance of the other materials was as follows: the poly(methyl methacrylate) materials, Caulk temporary bridge resin and G-C Unifast temporary resin; the composite material, Protemp; and the epimine material, Scutan.

Acrylic Resins↗
PubMed1983

Definitive prosthodontic therapy for TMJ patients. Part II: Posterior and superior condylar displacement.

Examples of anterior condylar repositioning were given for fixed and removable partial denture prostheses without changes in the vertical dimension of occlusion. A superior condylar displacement was treated with a temporary acrylic resin inferior repositioning prosthesis, followed by a gold onlay for over a year. Subsequent final porcelain-fused-to-gold restorations preserved the therapeutic inferior condylar repositioning. The treatment procedures are the same in principle for all patients, that is, the diagnosis and the fabrication of the provisional treatment prosthesis and the final prosthesis are carried out with the specific guidance of lateral transcranial TMJ radiographs. The patient must be comfortable in the planned treatment position for at least 3 months before final restorative procedures are initiated. The repositioned condyles in the fossae are reproduced in the final prosthesis and documented at each step of the procedure radiographically. The TMJ lateral transcranial radiograph, then, is a direct guide to the diagnosis, treatment prosthesis, and final prosthodontic restoration.

Dental Occlusion, Balanced↗
PubMedDate not supplied

An implant-supported rehabilitation case using innovative provisional restoration design and conversion as diagnostic and treatment modalities.

This article reviews and details a maxillary anterior implant-supported rehabilitation case that required an interdisciplinary approach. An innovative technique is presented, in which a transitional acrylic and wrought wire removable partial denture was converted at chairside to a provisional fixed bridge on the day of Stage II implant surgery. This technique underscores and illustrates the importance of diagnosis, planning, and sequential, coordinated treatment in dental rehabilitation.

Adult↗
PubMed1998

The extracted tooth pontic--provisional replacement during bone graft and implant healing.

When tooth extraction is required, a provisional restoration may be utilized as an interim prosthesis during bone graft and implant healing. The selection of provisional replacement of the anterior teeth following extraction may have a direct influence on the success of the definitive tooth replacement. This article describes a technique for using the extracted tooth or a denture tooth as an interim prosthesis during bone graft and implant healing. This method of provisionalization offers several advantages, including no adjacent tooth preparation, natural appearance, and retention of the papillae.

Adult↗
PubMed2000

Effect of temporary materials on bond strength of resin-modified glass-ionomer luting cements to teeth.

PURPOSE: To evaluate the effect of temporary materials on the bond strength of resin-modified glass-ionomer luting cements to teeth. MATERIALS AND METHODS: 240 freshly extracted bovine central incisors were ground to expose enamel and dentin surface. Fuji Lute and Vitremer Luting Cement were bonded to enamel and dentin surfaces after pretreatment for 1 week with (1) a eugenol-containing cement (Propac), (2) a eugenol-free cement (Freegenol Temporary Pack), (3) a polycarboxylate cement (HY-Bond Temporary Cement Hard), (4) a chemically cured temporary restorative resin (Plast Seal), and (5) a light-cured temporary restorative resin (Fermit). The flattened enamel and dentin surfaces were used as controls. After bonded specimens were stored in water at 37 degrees C for 24 hrs, the tensile bond strength was measured at a crosshead speed of 0.5 mm/min. The data were statistically analyzed by one-way ANOVA and Dunnett's Post-hoc Procedure (P < 0.05). RESULTS: Plast Seal had no adverse effect on the tensile bond strength of Fuji Lute on both enamel and dentin surfaces, while the other temporary materials revealed significant decrease in bond strength. In Vitremer Luting Cement, Propac, and Fermit, as well as Plast Seal demonstrated tensile bond strengths similar to the controls.

Analysis of Variance↗
PubMedDate not supplied

In vitro repair of three-unit fiber-reinforced composite FPDs.

PURPOSE: Clinical damage, such as the fracture or abrasion of composite veneers, may cause the loss of a fixed partial denture (FPD). Intraoral methods may help in repairing and therefore lengthening the life span of the restoration. The aim of this in vitro study was to evaluate an intraoral method of repairing fractured FPDs made of two different fiber-reinforced composite framework systems. MATERIALS AND METHODS: Shear bond strengths of a composite between two different fiber-reinforced composite frameworks were determined after five different mechanical surface treatments. A silicate-silane coating intraoral air-abrading system provided the most reliable bond strength values and was therefore used for treatment for the following veneer repair. The repair of 24 three-unit posterior FPDs was performed using a restorative composite resin. All FPDs were examined after simulating clinical service using thermocycling and mechanical loading. Fracture forces were determined for original FPDs and for FPDs after simulated intraoral repair. RESULTS: The fracture strength of all original FPDs was about 900 N. After repair, a maximum decrease in strength of about 15% was determined. FPDs that were extremely damaged by cutting the framework showed the lowest results, with values of about 450 N. CONCLUSION: The repair of the fractured veneer of fiber-reinforced composite FPDs provided good results and therefore may lengthen the life span of damaged FPDs. The repair of the fractured frameworks showed good results but can only be recommended for limited temporary use.

Air Abrasion, Dental↗