摘要:

Understanding the principles of occlusion as they relate to managing bite forces on implants is extremely important to maintain the longevity of dental implant prostheses. Specifically, altering vertical dimension of occlusion (VDO) scientifically and predictably is criti- cal to the creation of proper tooth form and guidance when fabricating a full-arch implant-supported prosthesis.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

This paper describes the evolution of the concept of selecting the abutment at first-stage surgery and presents clinical data accumulated over 14 years of the use of this concept with angulated abutments. The concept was developed for implants using internal and external hexed connections and has evolved in its use for implants using a Morse taper connection as a result of the considerable clinical advantages that this type of connection offers. A total of 3101 implants were restored using angled abutments ranging from 0 to 45 degrees and were observed over a period of up to 151 months. After an observation time of 120 months (10 years) after placement, the calculated 95% confidence interval of the mean survival estimation, according to Aalen et al, was 98.2% (± 0.7%).16The magnitude of the angles did not influence the survival rate. The need to refine the implant position in terms of the depth to which it was placed and the angulation and rotational orientation, as well as the size and pivot point of the final abutment, were recognized as contributing to the harmonious emergence profile of the restoration. Good esthetic and functional outcomes were achieved by the use of conventional cement-retained restorations made possible by parallel and aligned abutments.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

PurposeThis study aims to assess the effect of satellite implants on the primary stability of dental implants placed in fresh extraction sitesin vitro.Method34 titanium screw implants (3.75 mm × 10 mm; Bego, Bremen, Germany) were inserted in premolar- and molar-fresh extraction sites in domestic pig mandibles. Periotest (PT) values were assessed before and after insertion of one vestibular and one lingual 1.7-mm bone screw (Mondeal, Tuttlingen, Germany) as a satellite implant was connected to the implants with a 0.6-mm microplate welded to the implant abutment.ResultsThe average PT values were 2.9 with-out satellite implants, −1.0 with one satellite implant, and −2.5 with two satellite implants during horizontal testing, and 3.0, 1.4, and 0.4, respectively, for vertical testing.ConclusionSatellite implants increase the horizontal stability of implants in fresh extraction sites. Differences for horizontal PT assessment were significant on a 0.01 level of confidence. Implants in extraction sites may be loaded immediately, if vertical stabilization is provided by cortical bone and if horizontal PT values show sufficient stability after satellite implant insertion.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

This paper demonstrates how a computer software program was utilized in a private practice to supplement the clinical evaluation of one implant system. Clinical data were entered into a computer database at the time of implant placement and up to 13 years for follow-up appointments. Data were divided into two groups and subjected to lifetable analyses. The focus group consisted of a machined-titanium, screw-type implant with an internal abutment connection from one manufacturer. The residual database consisted of mixed implant designs with a variety of abutment connections and surfaces from several other manufacturers. Lifetable survival data between the two groups were generated. Cumulative survival rates from 0 to 13 years were 94.2% (n = 435) for the focus group and 90.1% (n = 2339) for the reference group. There were 25 implants lost in the focus group and 11 other implants were deemed “at risk.” Survival results from other lifetable analyses are also presented for the two groups. Documentation of empirical clinical data in a computer software database over a period of time can help private practice clinicians better evaluate the dental implant systems used in their practices.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

A risk management protocol for the placement of implants in the posterior mandible is a sensible precaution for reducing the risk of nerve damage and the risk of possible litigation. This paper identifies the need for careful treatment planning and the use of relevant tests (eg, the CT scan). A protocol is presented that advised the use of certain procedures to reduce the risk of nerve damage. These procedures consider the incision, the type of anesthetic, x-rays as you proceed, the type of implant, and use of anti-inflammatories.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

Untreated dental bone defects usually lead to resorption of alveolar bone. Filling these defects with bone substitute material prevents resorption of bone, preserves the alveolar ridge, and provides sufficient bone for immediate or subsequent implant placement. A variety of bone substitutes is available. They differ in origin, consistency, particle size, porosity, and resorption characteristics. We have treated almost 1000 bony defect sites in 267 patients with the bone regener-ation material Cerasorb. Being resorbed simultaneously with the formation of new bone, it is completely replaced by the patient’s own vital bone within 6 to 12 months. The representative cases described in this paper demonstrate the successful use of the pure-phase &bgr;-tricalcium phosphate ceramic in the treatment of all dental bone defects.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

A technique is presented for placement of implants at the time of tooth extraction in the precisely desired positions, regardless of extraction socket morphology. To date, 162 implants have been placed utilizing this technique. One was mobile at uncovery and removed. The other implants have been successfully in function, as defined by the Albrektsson Criteria, for up to 7 years, yielding a cumulative success rate of 99.4%.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

Diabetes mellitus is no longer considered to be a contraindication for implant-supported prostheses, provided that the patient’s blood sugar is under control, and that there is motivation for oral hygiene procedures. This paper presents the experiences of treating diabetic patients using implants with good success rates.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

摘要:

The purpose of the study was to compare the results of implants immediately loaded in edentulous sites with implants loaded immediately in extraction sites. Since December 1998, we selected a small group of patients for immediate or early loading. Seventy-five implants were placed in nine jaws of seven patients. Two of the patients received implants in both the maxilla and mandible. Of the 75 implants placed, 29 were placed in immediate extraction sites. Twenty-six of the 29 that were placed in immediate extraction sites were loaded in less than 3 weeks. Of the 75 implants placed, 62 were loaded early (less than 3 weeks). Two im-plants have been lost. The remaining 13 implants were buried and allowed to heal in the customary manner. None of the buried implants failed. One of the implants lost was in an extraction site and one was in a nonextraction site. Of the 33 implants that were placed in edentulous areas and immediately loaded, one was lost. This is compared with the 29 implants placed in extraction sites that were immediately loaded. We conclude that the success rates for implants immediately loaded in extraction sites and edentulous sites are comparable.

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID

ISSN:1056-6163    

出版商:OVID    

年代:2002

数据来源: OVID