A Bone Regenerative Approach to Alveolar Ridge Maintenance Following Tooth Extraction. Report of 10 Cases

Abstract

Ten patients who required two or more anterior teeth extractions were utilized in this study. Extraction procedures were carried out with a full thickness surgical flap approach. After flap reflection, teeth were removed with a minimum of trauma to the surrounding bone. Following extraction silicone‐based impression techniques were used to produce a model of the alveolar process and small metal pins were placed in the alveolus to be used as fixed points to make measurements of ridge dimensions. One socket was covered with an expanded polytetrafluoroethylene (ePTFE) barrier membrane (experimental site); the other socket was a conventional control. The soft tissue flaps were then mobilized using periosteal releasing incision and the wound closed with ePTFE mattress sutures. Six months following extraction, patients were treated with flap surgery to expose both extraction sites to remove the ePTFE membranes and to measure ridge dimensions using the pins as fixed points. Clinical and model measurements have shown statistically significant better ridge dimensions at experimental sites than at control (P ≤ 0.05). Three patients with exposed membranes had similar dimensional changes as controls. Results from this study suggested that this improved technique offers a predictable alveolar ridge maintenance enhancing the bone quality for dental implant procedures and esthetic restorative dentistry. J Periodontol 1997;68:563–570.

Volet osseux et interception tissulaire appliqués au dégagement et à l’avulsion des canines incluses

“…L'exposition de l'os trabéculaire augmente considérablement la résorption osseuse : -la revue de la littérature sur la réparation osseuse montre qu'il y a, au minimum, un an après une extraction [14], une perte verticale de l'os alvéolaire de 2 à 3 mm au maxillaire et de 4 à 5 mm à la mandibule [16] ; -les études cliniques et radiographiques réalisées par Lekovic et al [9] ont confirmé que la perte osseuse alvéolaire est tridimensionnelle ; -la résorption osseuse, qualifiée par Atwood [1] de chronique, progressive, irréversible et cumulative, est plus marquée sur l'os trabéculaire que sur l'os cortical.…”

Fogeltávolítást követően visszamaradt szöveti defektus ellátása. Három eset ismertetése

“…Több alveolusprezervációs technika ismert, amelyek mindegyike külön-külön jobb eredményt mutat, mintha az alveolust magára hagynánk [8][9][10]. Az irodalom azonban nem egyértelmű a tekintetben, hogy melyik technika a legalkalmasabb [11][12][13][14].…”

Alveolar Ridge Preservation with β-TCP Graft and Platelet-Rich Fibrin

“…This provides the clinician with successful treatment outcomes despite the presence of localized bone defects at implant site. 8 Alloplastic materials are most often made of different formulation of calcium phosphate in the forms of hydroxyapetite, tricalcium phosphate (TCP) or combination of this, also called biphasic calcium phosphates. 9,10 They are valuable alternatives as bone substitute materials.…”

“…Ridge preservation using the guided bone regeneration (GBR) technique has been shown to improve ridge height and width dimensions when compared with tooth extraction alone. 8,22 The principles of guided tissue regeneration and the minimally traumatic removal of teeth and protection of the blood clot have been applied to socket preservation procedures. The membrane maintains the stability of the wound area, and prevents nonbone-forming connective tissue and epithelium from invading the extraction socket.…”