scholarly journals Maxillary Ridge Vertical Augmentation Based on a Mixture of Xenogenic and Allogenic Bone Supported by Resorbable Membrane: One Case Report

Author(s):  
Gonzalez-Menendez M ◽  
Gonzalez-Tuñon J ◽  
Ordoñez S ◽  
Junquera L ◽  
Vega JA

One 60 years-old patient was scheduled for left posterior maxillary ridge augmentation due to failure of standard implants, followed by successful maxillary dental implants. We used an unproved technique consisting in a mixture of 50% allogenic and 50% xenogenic bone supported by reabsorbable membrane. No complications were found at the different stages of the treatment, and at the ending the patient showed a good level of satisfactory outcomes. Radiological evaluation demonstrated ridge augmentation able to support implant, and within the graft islands of connective and bone-like tissue was found. Within these tissues osteoclasts and osteoblast putative cells were found. Results demonstrate that the used method in addition to support implants has osteogenic and bone remodeling activity.

2019 ◽  
Vol 45 (4) ◽  
pp. 297-299
Author(s):  
Vinicius Canavarros Palma ◽  
Rafael da Silva Caetano ◽  
Alvaro Henrique Borges ◽  
Luiz Evaristo Ricci Volpato

This case report describes the rehabilitation of a patient who received dental implants in traumatic bone cyst areas (TBC). A 24-year-old male patient sought dental treatment for the bilateral absence of the mandibular second premolars. Radiographic examination revealed bilateral large radiolucent images in the mandible body. Surgical exploration confirmed the diagnosis of TBC. Rehabilitation with dental implants was performed using different approaches on each side. One cystic cavity was filled with blood clot and allogenic bone graft; the other was filled only with blood clot. After 5 years, the implants are osseointegrated and functioning. The filling of the traumatic bone cyst cavity with local blood clot in contact with the implant presented clinical and radiographic success similar to that obtained with filling with bone graft in the same patient. Thus, in this patient, the blood clot-only approach can be considered as a viable, safe-low cost alternative to blood clot and grafting material.


2007 ◽  
Vol 33 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Jun-Beom Park

Abstract Placement of endosseous dental implants in diabetic patients may be compromised because of altered wound healing. Additionally there is no established timetable for implant healing in these patients. A case report is presented that evaluates implant healing at the site of a failed implant after its removal. This report documents bone remodeling in a diabetic patient 6 months after removing the failed implant. The prostheses was delivered within 4 months in the upper arch despite the complications during the healing period.


Author(s):  
Deepak Kaul ◽  
Farahnaz Muddebihal ◽  
Mohammed Anwar Ul Haque Chand

Osteomyelitis of maxillofacial skeleton is common in developing countries such as India. This case report describes successful surgical treatment of chronic suppurative osteomyelitis {CSO} of the mandible of a 35yr old female. The precipitating factor was thought to be eventful extraction in the {left } posterior body at the inferior border of mandible. Methods: Presurgical course of antibiotics ( Amoxycillin and metronidazole for 7 days and later followed by doxycycline for 1 month).Surgical debridement of the affected bone and reinforcing it with reconstruction plate using AO principles was done . Patient was kept on a high nutrient diet consisting of proteins. Conclusion: The case report demonstrates the typical features of CSO . The combination of the antibiotics therapy and surgical debridement was successful in the treatment of chronic suppurative osteomylitis.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mehran Ashrafi ◽  
Farzan Ghalichi ◽  
Behnam Mirzakouchaki ◽  
Manuel Doblare

AbstractBone remodeling identifies the process of permanent bone change with new bone formation and old bone resorption. Understanding this process is essential in many applications, such as optimizing the treatment of diseases like osteoporosis, maintaining bone density in long-term periods of disuse, or assessing the long-term evolution of the bone surrounding prostheses after implantation. A particular case of study is the bone remodeling process after dental implantation. Despite the overall success of this type of implants, the increasing life expectancy in developed countries has boosted the demand for dental implants in patients with osteoporosis. Although several studies demonstrate a high success rate of dental implants in osteoporotic patients, it is also known that the healing time and the failure rate increase, necessitating the adoption of pharmacological measures to improve bone quality in those patients. However, the general efficacy of these antiresorptive drugs for osteoporotic patients is still controversial, requiring more experimental and clinical studies. In this work, we investigate the effect of different doses of several drugs, used nowadays in osteoporotic patients, on the evolution of bone density after dental implantation. With this aim, we use a pharmacokinetic–pharmacodynamic (PK/PD) mathematical model that includes the effect of antiresorptive drugs on the RANK/RANK-L/OPG pathway, as well as the mechano-chemical coupling with external mechanical loads. This mechano-PK/PD model is then used to analyze the evolution of bone in normal and osteoporotic mandibles after dental implantation with different drug dosages. We show that using antiresorptive agents such as bisphosphonates or denosumab increases bone density and the associated mechanical properties, but at the same time, it also increases bone brittleness. We conclude that, despite the many limitations of these very complex models, the one presented here is capable of predicting qualitatively the evolution of some of the main biological and chemical variables associated with the process of bone remodeling in patients receiving drugs for osteoporosis, so it could be used to optimize dental implant design and coating for osteoporotic patients, as well as the drug dosage protocol for patient-specific treatments.


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