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At least 829 records · Page 46Linked to original sources
PubMed2000

The comparative radiopacity of Fuji IX-GP, an intermediate restorative material.

The radiopacity of intermediate restorative materials should be sufficient to enable the clinician to distinguish the material from normal and decalcified tooth structure. The purpose of this study was to determine the relative radiopacities of intermediate restorative materials, including a newly introduced high-viscosity, self-cured, condensable glass ionomer material. Radiographs were made of six intermediate restorative materials: two reinforced zinc oxide-eugenol materials (IRM and Zinroc), a conventional glass ionomer material (Ketac-fil), a synthetic resin material (Cavit), a eugenol-free zinc oxide material (Tempit), and a new, general-purpose, condensable glass ionomer material (Fuji IX-GP). Optical density was measured using a densitometer. The optical density of dentin and enamel were used for radiographic comparison. Statistical analysis revealed significant differences among materials: Cavit = IRM = Tempit > Zinroc = Fuji IX-GP > Ketac-fil = enamel > dentin (where > indicates a statistical difference at p < or = 0.05). Although not as radiopaque as some other intermediate materials tested, the radiopacity of Fuji IX-GP appears sufficient to aid diagnosis.

Calcium Sulfate↗
PubMedDate not supplied

A preliminary study on a resin-modified glass-ionomer cement for transitional restorations and subsequent core buildups.

PURPOSE: The purpose of this study was to evaluate the serviceability of a resin-modified glass-ionomer cement for transitional restorations and subsequent core buildups in endodontically treated maxillary premolars. MATERIALS AND METHODS: Fifty Vitremer restorations were made in 42 patients by one operator during a period of 5 months. After 1 year of follow up, the quality of the restorations was assessed for the variables occlusal contacts, proximal contacts, marginal adaptation, and surface roughness. Survival was estimated at 2 years of service either as a transitional restoration or as a core buildup. RESULTS: The percentage survival of the transitional restorations was 85% +/- 6%. When the crowned Vitremer restorations were added to the transitional restorations, the 2-year survival was 98% +/- 2%. With respect to the quality assessment, the majority of the restorations showed either no or light occlusal contacts and no or light contacts on at least one of their proximal surfaces. Marginal integrity and surface roughness were considered to be suboptimal on average. CONCLUSION: The described restorations seem to perform adequately for a transitional period of 1 to 2 years. Their viability as substructures for permanent cast restorations remains to be tested in long-term clinical studies.

Adult↗
PubMed2000

Direct pressure provisionalization technique: a new open-tray technique for complete-arch rehabilitations.

An innovative direct technique that improves the accuracy of provisional acrylic resin restorations is introduced. A custom impression tray is modified to facilitate complete occlusal closure. This open tray is used to make an accurate overimpression prior to beginning tooth preparation procedures. Following tooth preparation, the acrylic resin-filled overimpression is returned to its intraoral position, and the patient occludes into the previously indexed impression material. The pressure overimpression technique is offered as an expedient technique for improving the accuracy of provisional restorations.

Acrylic Resins↗
PubMed1999

[Clinical observation of oral appliances in the treatment of obstructive sleep apnea syndrome].

OBJECTIVE: To explore the effect of treatment with the oral appliances on 36 cases with obstructive sleep apnea syndrome (OSAS). METHODS: The patients are requested to put on the proper oral appliances when sleeping. Polysomnography (PSG) are used to measure the apnea hypoventilation index(AHI), lowest SaO2 and longest apnea time before and after treatment. RESULTS: Having been Compared with the obtained data, the AHI decreased, the lowest SaO2 increased and the longest apnea duration shortened significantly (P < 0.05) in OSAS patients after oral appliance treatment. CONCLUSIONS: The oral appliances helped to widen the upper airway, stabilized the lower jaw bone on a forward position to make the tongue and the soft palate move forward, increased the effective amount of inhaled air while sleeping and improved sleeping quality. There fore, it is an effective method for the treatment of OSAS.

Dental Restoration, Temporary↗
PubMedDate not supplied

Cvek pulpotomy: report of a case with five-year follow-up.

Partial pulpotomy (Cvek pulpotomy) is the treatment of choice for injured permanent incisor teeth with exposed vital pulp tissue and immature apices. This treatment preserves pulpal function, thus allowing continued root development. The present report describes the case of a permanent incisor with incomplete root end closure that underwent a Cvek pulpotomy, with subsequent apical closure. Five years post pulp therapy, the tooth remained symptom free.

Calcium Hydroxide↗
PubMed2002

Immediate anterior implant placement and early loading by provisional acrylic crowns: a prospective study after a one-year follow-up period.

Implant dentistry has evolved from a functional replacement of teeth to an aesthetically driven replacement of the natural tooth system. An immediate implant insertion after extraction may maintain the crestal bone and the interdental gingival soft tissue. With proper design, the implant gingival complex will heal to restore the correct gingival environment. In this prospective study, 18 Osseotite (3i, USA) implants were placed in 13 patients (8 women and 5 men with an average age of 32 years), using an immediate implant placement protocol and immediate loading by provisional crowns. Using the life table analysis method, the cumulative implant success rate was calculated at 100 per cent. A one-year interim report indicates that the implant developed and extended; functional osseous state show a predictable and reliable method after one year follow up period.

Acrylic Resins↗
PubMed2002

Fabricating custom provisional restorations for the ITI solid abutment system.

This article describes a technique for the quick and accurate fabrication of custom acrylic resin provisional restorations for the ITI implant system. Materials and procedures common to fixed prosthodontics are used. The technique should necessitate no more chairtime than the fabrication of custom acrylic provisional restorations for conventional fixed prostheses.

Acrylic Resins↗