Human Histologic Analysis of Mineralized Bone Allograft (Puros) Placement Before Implant Surgery

2004 ◽  
Vol 30 (2) ◽  
pp. 74-82 ◽  
Author(s):  
John C. Minichetti ◽  
Joseph C. D'Amore ◽  
Anna Y. J. Hong ◽  
Deborah B. Cleveland
Keyword(s):  
Tooth Extraction ◽  
Bone Matrix ◽  
Bone Allograft ◽  
Bone Volume ◽  
Microscopic Level ◽  
Bone Augmentation ◽  
Light Microscopic Level ◽  
Histologic Analysis ◽  
Implant Placement ◽  
Extraction Site

Abstract Because clinicians are placing more dental implants, it is becoming more important to maintain bone volume after tooth extraction. This article discusses the various bone-augmentation materials available to the clinician and illustrates a case report of particulate mineralized bone allograft (Puros) placement after extraction. Exposure of the grafted site after 5 months revealed a hard bony structure. Human histologic analysis at the light microscopic level revealed nonvital spicules of mature calcified bone having a highly organized matrix surrounded by viable noncalcified immature bone matrix, or osteoid. It was concluded that mineralized human allograft demonstrated the formation or remodeling of bone histologically and was clinically useful to maintain bone volume for implant placement after extraction. To the authors' knowledge, this is the first publication to demonstrate human histology of particulate mineralized bone allograft (Puros) after placement into an extraction site.

scholarly journals Alveolar Bone Augmentation

2014 ◽  
Vol 614 ◽  
pp. 89-94 ◽  
Author(s):  
Cena Dimova ◽  
Kiro Papakoca ◽  
Velko Papakoca
Keyword(s):  
Dental Implant ◽  
Tooth Extraction ◽  
Alveolar Bone ◽  
Bone Volume ◽  
The Body ◽  
Surgical Reconstruction ◽  
Bone Augmentation ◽  
Alveolar Ridge Augmentation ◽  
Ridge Augmentation ◽  
Implant Placement

Bones and teeth are the only structureswithin the body where calciumandphosphate participate asfunctional pillars. Despite their mineralnature, both organs are vital and dynamic. The aim was to remark the indications for alveolar augmentation after tooth extraction and prior the placement of endoosseous dental implants. The autograft, allograft, alloplast, and xenograftmaterials all have reported success, alone or in combination,for particulate bone augmentation. Theparticulate autograft is the gold standard for mostcraniofacial bone grafting, including the treatmentof dental implant–related defects. Advantages of alveolar ridge augmentation with sufficient bone volume to adjust for uncompromised and esthetic implant placement, renders these procedures more than effective for majority of patients. Surgical reconstruction of the tissues and the procedure of ridge augmentation and subsequent placement of dental implant are necessary.

Three-Year Analysis of Tapered Screw-Vent Implants Placed into Extraction Sockets Grafted With Mineralized Bone Allograft

2005 ◽  
Vol 31 (6) ◽  
pp. 283-293 ◽  
Author(s):  
John C. Minichetti ◽  
Joseph C. D'Amore ◽  
Anna Y. J. Hong
Keyword(s):  
Bone Graft ◽  
Success Rate ◽  
Dental Implants ◽  
Tooth Extraction ◽  
Bone Allograft ◽  
Bone Volume ◽  
Success Rates ◽  
Implant Placement ◽  
Healing Period ◽  
Fixed Prosthesis

Abstract With clinicians placing more dental implants, it is becoming increasingly important to maintain bone volume after tooth extraction. This article reports the results of implants placed into extraction sites grafted with particulate mineralized bone allograft (Puros). A total of 313 extraction sites were grafted with mineralized bone graft during a 36-month period. A total of 252 Tapered Screw-Vent dental implants were placed into the grafted extraction sites after a 4- to 7-month healing period. All reentries revealed a bony hard structure acceptable for osteotomy preparation. A total of 244 of these implants have been restored with fixed prosthesis and 6 with removable overdentures for a total of 250 loaded implants. A total of 6 implants failed, which required their removal (2 implants before load and 4 after loading), resulting in a 97.6% implant success rate. We conclude that mineralized human allograft placed into extraction sites is clinically useful to maintain bone volume. This material provided a bony hard structure acceptable for implant placement with good success rates.

scholarly journals A case series of profilometric changes in two implant placement protocols at periodontally compromised non-molar sites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kwantae Noh ◽  
Daniel S. Thoma ◽  
Jung-Chul Park ◽  
Dong-Woon Lee ◽  
Seung-Yun Shin ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Tooth Extraction ◽  
Case Series ◽  
Tissue Level ◽  
Ridge Preservation ◽  
Bone Augmentation ◽  
Implant Placement ◽  
Alveolar Ridge Preservation ◽  
Tissue Changes ◽  
Facial Area

AbstractInformation regarding profilometric changes at a soft tissue level following implant placement with different protocols is insufficient. Therefore, this study aimed to comparatively investigate the profilometric tissue changes with respect to late implant placement following alveolar ridge preservation (LP/ARP) and early implantation (EP) in periodontally compromised non-molar extraction sites. Sixteen patients were randomly assigned to the following groups: implant placement 4 months post-ARP (group LP/ARP) and tooth extraction and implant placement 4–8 weeks post-extraction (group EP). Dental impressions were obtained immediately after final prosthesis insertion and at 3, 6, and 12 months. At the time of implant placement, bone augmentation was performed in the majority of the patients. Profilometric changes of the tissue contour were minimal between the final prosthesis insertion and 12 months in the mid-facial area (0.04–0.35 mm in group LP/ARP, 0.04–0.19 mm in group EP). The overall tissue volume increased in both groups (1.70 mm3 in group LP/ARP, 0.96 mm3 in group EP). In conclusion, LP/ARP and EP led to similar stability of the peri-implant tissue contour between the final prosthesis insertion and at 12 months. Moreover, the change of peri-implant tissue on the soft tissue level was minimal in both modalities.

Efficacy of Alveolar Ridge Preservation: A Randomized Controlled Trial

2020 ◽  
Vol 99 (4) ◽  
pp. 402-409 ◽  
Author(s):  
G. Avila-Ortiz ◽  
M. Gubler ◽  
M. Romero-Bustillos ◽  
C.L. Nicholas ◽  
M.B. Zimmerman ◽  
...  
Keyword(s):  
Tooth Extraction ◽  
Alveolar Bone ◽  
Controlled Trial ◽  
Control Group ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Bone Augmentation ◽  
Randomized Controlled ◽  
Implant Placement ◽  
Alveolar Ridge Preservation

Alveolar ridge preservation (ARP) therapy is indicated to attenuate the physiologic resorptive events that occur as a consequence of tooth extraction with the purpose of facilitating tooth replacement therapy. This randomized controlled trial was primarily aimed at testing the efficacy of ARP as compared with unassisted socket healing. A secondary objective was to evaluate the effect that local phenotypic factors play in the volumetric reduction of the alveolar bone. A total of 53 subjects completed the study. Subjects were randomized into either the control group, which involved only tooth extraction (EXT n = 27), or the experimental group, which received ARP using a combination of socket grafting with a particulate bone allograft and socket sealing with a nonabsorbable membrane (dPTFE) following tooth extraction (ARP n = 26). A set of clinical, linear, volumetric, implant-related, and patient-reported outcomes were assessed during a 14-wk healing period. All linear bone assessments (horizontal, midbuccal, and midlingual reduction) revealed that ARP is superior to EXT. Likewise, volumetric bone resorption was significantly higher in the control group (mean ± SD: EXT = −15.83% ± 4.48%, ARP = −8.36% ± 3.81%, P < 0.0001). Linear regression analyses revealed that baseline buccal bone thickness is a strong predictor of alveolar bone resorption in both groups. Interestingly, no significant differences in terms of soft tissue contour change were observed between groups. Additional bone augmentation to facilitate implant placement in a prosthetically acceptable position was deemed necessary in 48.1% of the EXT sites and only 11.5% of the ARP sites ( P < 0.004). Assessment of perceived postoperative discomfort at each follow-up visit revealed a progressive decrease over time, which was comparable between groups. Although some extent of alveolar ridge remodeling occurred in both groups, ARP therapy was superior to EXT as it was more efficacious in the maintenance of alveolar bone and reduced the estimated need for additional bone augmentation at the time of implant placement (ClinicalTrials.gov NCT01794806).

scholarly journals Sinus Lift and Transantral Approach to Root Fragment Removal

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Andrea Enrico Borgonovo ◽  
Federica Rizza ◽  
Adele Dudaite ◽  
Rachele Censi ◽  
Dino Re
Keyword(s):  
Case Report ◽  
Tooth Extraction ◽  
Root Apex ◽  
Bone Volume ◽  
Molar Tooth ◽  
Sinus Lift ◽  
Implant Placement ◽  
Additional Surgery ◽  
Surgical Field ◽  
Postoperative Discomfort

The aim of this case report is to present a case of root fragment removal during planned sinus lift procedure. After failed molar tooth extraction, we chose to retrieve the residual root apex with transantral approach not to damage excessively bone volume. Without changing primary implant rehabilitation purpose, the fragment removal procedure was performed prior to implant placement during necessary sinus lift surgery. Higher visibility of surgical field was achieved. The root fragment residual was removed without an additional surgery appointment avoiding postoperative discomfort. The goal is to underline the importance of being able to change planning during intrasurgical complications. It is most appropriate to operate with safe and simple procedures to reduce surgical discomfort for the patient.

Implant Installation With Bone Augmentation and Transmucosal Healing With Demineralized Human Cortical Bone in the Maxillary Anterior Region: Report of 3 Cases

2012 ◽  
Vol 38 (6) ◽  
pp. 762-766 ◽  
Author(s):  
Jun-Beom Park
Keyword(s):  
Demineralized Bone Matrix ◽  
Bone Matrix ◽  
Animal Experiments ◽  
Bone Augmentation ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Tissue Changes ◽  
Term Basis ◽  
Immediate Implant ◽  
Soft Tissue Changes

It is well known that a decrease in vertical height and in horizontal width is seen after tooth extraction. Immediate implant placement, originally thought to prevent buccal wall resorption, showed little or no evident decrease of the resorption rate or pattern in animal experiments or clinical studies. Thus, the need for bone augmentation with immediate implantation has been suggested. However, until recently, simultaneous bone augmentation with immediate implant placement was thought to be possible only in a submerged environment. In this report, the harmony of soft and hard tissue was achieved in 3 patients by immediate implant placement and bone augmentation with transmucosal healing in esthetically challenging situations. Further evaluation is needed to monitor hard- and soft-tissue changes on a long-term basis. Implant placement and bone augmentation with transmucosal healing using demineralized bone matrix may be an option in the treatment of the loss of anterior teeth.

scholarly journals Early Implant Placement with Delayed Loading in Anterior Aesthetic Zone - A Case Report

2020 ◽  
Vol 4 (2) ◽  
pp. 89-92
Author(s):  
Manoj Humagain ◽  
Simant Lamichhane ◽  
Mahima Subba ◽  
Manisha Neupane ◽  
Asmita Dawadi
Keyword(s):  
Case Report ◽  
Soft Tissue ◽  
Tooth Extraction ◽  
Tissue Loss ◽  
Bone Augmentation ◽  
Numbering System ◽  
Implant Placement ◽  
Tissue Healing ◽  
Natural Dentition ◽  
Soft Tissue Loss

To prevent the sequelae of hard and soft tissue loss after tooth extraction, future need of bone augmentation procedures and utilisation of benefits during early stages of tissue healing, early implant promises to be an armoury for dental implantologists to perfectly simulate the natural dentition in anterior aesthetic areas. Here, a case of 30 years old male with a missing #11 (according to two-digit numbering system) planned for early implant placement and immediate temporisation with delayed loading is presented.

scholarly journals Bone Augmentation and Simultaneous Implant Placement with Allogenic Bone Rings and Analysis of Its Purification Success

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1291 ◽  
Author(s):  
Bernhard Giesenhagen ◽  
Nathalie Martin ◽  
Ole Jung ◽  
Mike Barbeck
Keyword(s):  
Alveolar Bone ◽  
Clinical Success ◽  
Bone Matrix ◽  
Allogeneic Bone ◽  
Bone Augmentation ◽  
Electron Microscopic ◽  
Clinical Images ◽  
Implant Placement ◽  
Freeze Dried ◽  
Scanning Electron

The main objective of this manuscript was to demonstrate the use of freeze-dried bone allografts (FDBA) by means of a technique of simultaneous bone augmentation and implant placement (“Bone Ring Technique”) in different indications, i.e., ridge reconstruction and sinus floor elevation procedure with a maxillary bone height of less than 4 mm. Moreover, cases with an up to 3-year follow-up were chosen to analyze the techniques of mid-term clinical success. Finally, the purification success of the FDBA was analyzed by means of established scanning electron microscopic (SEM) and histological methods. The FBDA bone ring was applied in three different patients and indications and presented; the healing success was analyzed on the basis of radiographical and clinical images. For analysis of the purification of the allogeneic bone, previously established histological methods and scanning electron microscopy (SEM) were applied. All analyzed patient cases showed that the FDBA-based bone ring was fully integrated into newly built alveolar bone. Furthermore, the observations revealed that the three-dimensional bone reconstructions in maxilla and mandible were stable within the observational period of up to 3 years. Altogether, the present data show that the application of the Bone Ring Technique using the FDBA rings allows for successful regeneration of alveolar bone with a predictable clinical outcome, functionality and esthetics. Moreover, the material analyses showed that the allogeneic bone tissue was free of cells or cell remnants, while the (ultra-) structure of the bone matrix has been retained. Thus, the biological safety of the FDBA has been confirmed.

scholarly journals Horizontal Ridge Augmentation and Contextual Implant Placement with a Resorbable Membrane and Particulated Anorganic Bovine Bone-Derived Mineral

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Ferdinando Attanasio ◽  
Andrea Pacifici ◽  
Amerigo Giudice ◽  
Antonella Polimeni ◽  
Luciano Pacifici
Keyword(s):  
Relevant Literature ◽  
Bone Volume ◽  
Collagen Membrane ◽  
Bovine Bone ◽  
Bone Augmentation ◽  
Medium Term ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Horizontal Augmentation ◽  
Autologous Bone

Alveolar ridge deficiency is considered a major limitation for successful implant placement. Various approaches have been developed to horizontal augmentation of bone volume. This case report presents the medium-term results of one-stage guided bone augmentation using an anorganic bovine bone (70%) and autologous bone (30%), placed in layers, in association with resorbable collagen membrane for a subsequent implant placement. The patient presented with a localized horizontal ridge defect in the posterior zone of the jaw. The clinical and radiographic presentations, as well as relevant literature, are presented.

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