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At least 487 records · Page 27Linked to original sources
PubMed2001

Tissue preservation for single-tooth anterior esthetics.

Placing implants in the esthetic zone can be difficult because of the expectations of the patient. Inevitably, the hard and soft tissue architecture is lost after extraction in the traditional two-stage procedure, and additional surgical procedures are required to restore the tissue that has been lost. The authors describe techniques that can be applied to retain ideal soft tissue if it is present and predictably restore tissue that is less than ideal.

Adolescent↗
PubMed2001

Site development in periodontal therapy--alveolar bone augmentation as an adjunct to endosseous implant placement.

This article reviews some of the current concepts of site development in periodontal therapy as well as hard tissue augmentation as an adjunct to endosseous implant placement. This article reviews the historical perspectives of guided bone regeneration and addresses the management and development of extraction sites, inadequate ridge widths, and sinus augmentation before implant placement. Selected cases are presented to illustrate these clinical situations. In addition, key concepts for the success of bone augmentation and implant dentistry are discussed.

Adult↗
PubMed2001

[Iatrogenic streptococcal sepsis-- a case report].

A case study of iatrogenic streptococcal sepsis is presented. That was caused by the stomatological device left in a dental alveolus at time of dental treatment and prosthetic restoration. Systemic inflammatory response because of dentigenous spread endangered the patients life.

Dental Instruments↗
PubMed2002

Avulsion and replantation.

The reported incidence of tooth avulsion ranges from 1% to 11% of all traumatic injuries to the permanent dentition. The maxillary central incisor is the most frequently avulsed tooth in the permanent dentition, and the most frequently involved age group is 7-10 years. This article reviews the present day knowledge on avulsion and replantation of permanent teeth. Treatment objectives are explained, and clinical management outside and inside the dental office are discussed. Detailed treatment protocols are provided considering the extraoral time and the degree of apical closure.

Anti-Bacterial Agents↗
PubMed2001

Biomechanical effects of cervical lesions and restoration on periodontally compromised teeth.

OBJECTIVE: The purpose of this study was to photoelastically evaluate the effects of cervical root lesions and their restoration on stress distribution in periodontally compromised teeth. METHOD AND MATERIALS: Three-dimensional composite photoelastic models of a maxillary first premolar with buccal cervical root lesions were fabricated. Two different lesion configurations, wedge- and shallow saucer-shaped, at 20% alveolar bone height reduction were tested. A 35% reduction model was given a wedge-shaped lesion. The lesions were restored with microfine resin composite. Vertical loads of 7.5 lbs were applied to the unrestored and restored models at the tip of the buccal cusp and the tip of the lingual cusp. The resulting stresses within the tooth models were monitored and recorded photographically in the field of a circular polariscope arrangement. RESULTS: For buccal cusp loading of the unrestored models, stress concentrated at the apex of the lesion regardless of the lesion shape or periodontal support conditions. The highest stress concentration was observed around the apex of the wedge-shaped lesion on the 35% reduction model. Restoring the lesions changed stress distribution. Restoration of the lesions resulted in a marked stress reduction at the lesion apex. Stress along the gingival restoration-model interface was characteristic for the restored situation. The interfacial stress followed the contour of the restoration most closely for the wedge-shaped lesion on the 20% support reduction model. CONCLUSION: The shape and dimension of the lesion as well as periodontal support status has considerable influence on stress distribution, especially around the lesion, restored or not restored.

Alveolar Bone Loss↗
PubMed2000

Case challenge: the case of the missing root tip.

A 43-year old female had her left maxillary first molar removed by her dentist. Upon examining the tooth following the extraction, he discovered the distobuccal root was fractured. Inspection of the extraction site revealed the missing root remained in its alveolus. When attempts were made to remove the root, it suddenly disappeared. To our knowledge, no further efforts were made to locate the root. In the ensuing weeks, the patient's dentist inserted a three-unit bridge to fill the space created by the removal of the first molar. Two months after the extraction, the patient was referred to the Department of Oral Radiology at the University of Lund, Sweden, with a request for help in locating the lost root.

Adult↗
PubMedDate not supplied

Immediate mandibular rehabilitation with endosseous implants: simultaneous extraction, implant placement, and loading.

PURPOSE: This report of a clinical patient series indicates the relative safety and illustrates the procedures involved in the extraction of remaining teeth followed by immediate implant placement and loading with a simple acrylic resin fixed denture. MATERIALS AND METHODS: Ten consecutive patients who selected tooth extraction and implant-supported fixed denture rehabilitation of the mandible were treated using a 1-visit approach for extraction, implant placement, and restoration. Healthy individuals (10 women) were treated under local anesthesia. Fifty-four implants were placed in 10 patients. Five or 6 Astra Tech implants (11 or 13 mm long) were placed into the edentulous parasymphyseal region of the mandible. Four to 6 implants (48 of 54) were immediately loaded by the fabrication of a simple acrylic resin fixed denture. The criterion for loading was clinical judgment of primary stability, ie, the absence of axial or lateral mobility with physical resistance to rotation. Patients were recalled at 1, 3, and 12 weeks. At 12 weeks, impressions were made for the fabrication of a screw-retained fixed denture. The fixed dentures were completed using conventional fabrication and prosthetic techniques. RESULTS: After a period of 6 to 18 months, all 54 implants had survived and were considered 100% successful by independent testing of mobility and radiographic evidence of osseointegration. There were no surgical complications. Fracture and debonding of the acrylic resin provisional denture occurred for 1 patient during the first 12 weeks of treatment. DISCUSSION: Advantages to extraction with simultaneous replacement include the maintenance of vertical dimension, elimination of reline procedures and interim denture therapy, and potential improvement of soft tissue healing. CONCLUSION: This therapeutic approach simplifies patient care without apparent additional risk.

Adult↗
PubMed2002

Maxillary anterior esthetic extractions with delayed single-stage implant placement.

As a result of the high predictability of dental implantology, successful osseointegration is no longer the primary challenge. Rather, esthetics has emerged as the primary challenge. Hard and soft tissue ridge augmentation, performed either in preparation for later implant placement or concurrently with implant placement, has been described in the literature for the esthetic zone. These procedures are still evolving. If, however, ridge collapse can be prevented or minimized after tooth extraction, more predictable outcomes with better esthetics can be accomplished, along with fewer surgical procedures. This article describes a technique for esthetic extraction, as well as delayed esthetic single-stage implant placement, in the maxillary anterior sextant.

Aged↗
PubMed1997

Osseous regeneration in immediate postextraction implant placement: a literature review and clinical evaluation.

Immediate implant placement following tooth extraction in appropriately selected cases has been considered to be the optimal time for the procedure for the following reasons: The natural healing processes are mobilized to the maximum, no bone resorption has taken place as yet, drilling is avoided, the number of surgical stages are reduced, design and construction of the prosthesis is simplified, and the positive psychologic effect on the patient is immediate. The learning objective of this article is to discuss the results of immediate implant placement and guided osseous regeneration with membranes, as reported in the literature and as observed in the clinical practice by the authors. The findings of animal and human studies are presented, and the observations of the authors are compared with observations reported in the literature.

Animals↗
PubMedDate not supplied

Wide-diameter implant placement and internal sinus membrane elevation in the immediate postextraction phase: clinical and radiographic observations in 12 consecutive molar sites.

PURPOSE: To evaluate whether the combination of 5 surgical techniques in implant dentistry could be performed simultaneously in a predictable manner as effectively as each technique separately. MATERIALS AND METHODS: Immediately postextraction, 12 wide-diameter (WD) implants were placed in maxillary first or second molar sites. The residual vertical bone height ranged between 6 and 9 mm (average 7.8 mm). An internal sinus elevation, via the osteotomy site, was carried out in 10 sites using an osteotome tool implants were then self-tapped into the osteotomy site followed by Insertion of a customized healing screw. Consequently, horizontal gaps between the bony walls and the implant neck were filled by either bovine bone mineral or tricalcium phosphate particles. Full soft tissue closure around the healing cap screw was achieved by coronal positioning of the buccal flap. RESULTS: Soft tissue healing around the 12 implants was immaculate. In 10 sites, Internal osteotome sinus membrane elevation resulted in a height gain of between 2.5 and 6 mm (average 4.3 mm). Radiographically, bone-to-implant contact was evident. All implants were integrated and the prosthetic phase was completed after 6 months. DISCUSSION AND CONCLUSIONS: The combination of 1-stage technique and immediate placement of WD implants, along with internal sinus floor elevation and no soft tissue reflection at the time of implantation, is an achievable task and can be performed predictably. Time, cost, and morbidity are reduced, and the prosthetic solution is also eased for the benefit of the patient.

Adult↗
PubMed2003

Clinical classification of bone defects concerning the placement of dental implants.

The goal of this classification of bone defects related to dental implant placement is to help clinicians accurately discuss proposed treatment regimens and organize treatment for clinical correction. A further goal of this effort to categorize bone defects requiring bone augmentation for implant placement is to standardize terminology to allow for more accurate dental communication. The five most encountered categories of bony defects are described.

Alveolar Bone Loss↗
PubMed2003

Guided bone regeneration using an absorbable membrane combined with a one-stage implant into a recent extraction site: a case report.

Guided bone regeneration using an absorbable membrane combined with one-stage implants was used to treat a 45-year-old woman. Two months following tooth extraction, two implants were placed--one in the extraction site and one in a healed site. An absorbable membrane was applied to cover the bony defect in this recent extraction site. After a 24-month follow-up, probing depths were normal, increased radiopacity was seen in the extraction site, and the implant was still clinically stable.

Absorbable Implants↗