scholarly journals Associations among Primary Stability, Histomorphometric Findings, and Bone Density: A Prospective Randomized Study after Alveolar Ridge Preservation with a Collagen Cone

2020 ◽  
Vol 8 (4) ◽  
pp. 112
Author(s):  
Sigmar Schnutenhaus ◽  
Werner Götz ◽  
Jens Dreyhaupt ◽  
Heike Rudolph ◽  
Ralph G. Luthardt ◽  
...  
Keyword(s):  
Bone Density ◽  
Tooth Extraction ◽  
Randomized Study ◽  
Primary Stability ◽  
Collagen Membrane ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Implant Placement ◽  
Randomized Clinical Study ◽  
Alveolar Ridge Preservation

Background: The objective of this investigation was to examine whether determination of bone density (BD) with a cone beam computed tomography (CBCT) scan could help predict the primary stability (PS) of the implants and to investigate whether associations between the histomorphometric findings and the CBCT scan could be observed. Materials and methods: In this randomized clinical study, the efficacy of alveolar ridge preservation (ARP) with a combination of a collagen cone and a collagen membrane procedure after tooth extraction was investigated. CBCT scans were obtained after a healing period of 8 (±1) weeks. Subsequently, the CBCT scans were evaluated in terms of BD at different heights of the former socket. Eleven (±1) weeks after tooth extraction, implant placement was performed and PS was measured with resonance frequency analysis. Potential associations among the radiologically measured BD, the histomorphometric results, and the PS were analyzed. Results: No direct association was observed between the radiologically determined BD and the histomorphometric findings. No significant associations could be found between the BD and the PS. Conclusion: No significant associations were observed among the BD determined by the CBCT, the histomorphometric findings, and the PS.

scholarly journals Alveolar Ridge Preservation: A Histomorphometric Analysis

2018 ◽  
Vol 12 (1) ◽  
pp. 916-928 ◽  
Author(s):  
Sigmar Schnutenhaus ◽  
Werner Götz ◽  
Jens Dreyhaupt ◽  
Heike Rudolph ◽  
Ralph G. Luthardt
Keyword(s):  
Bone Formation ◽  
Bone Quality ◽  
Tooth Extraction ◽  
Collagen Membrane ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Histomorphometric Analysis ◽  
New Bone Formation ◽  
Randomized Clinical Study ◽  
Alveolar Ridge Preservation

Objective: This study presents the histomorphometric findings after tooth extraction with and without Alveolar Ridge Preservation (ARP) with a collagen cone filling the socket in combination with a collagen membrane covering the socket. Materials and Methods: In a controlled randomized clinical study, 10 patients were treated with the combination material after tooth extraction. In 10 patients, the extraction sockets were left to heal without further intervention. Soft tissue, new bone formation, bone quality and bone remodeling, blood flow vascularization, and inflammation were evaluated histomorphometrically. This was performed (semi-) quantitatively using a blinded protocol. Results: The statistical evaluation showed no significant difference for any parameter. When the combination material was used, more pronounced remodeling, increased osteoblast activity, and increased vascularization were demonstrated based on the histomorphometric findings. In contrast, there were reduced levels of osteogenesis and less mineralization. There was slightly more bundle bone in patients with ARP. Conclusion: The histomorphometric analysis of ARP with a combination material consisting of a collagen cone and a collagen membrane showed no significant differences in terms of new bone formation and bone quality. Descriptively, however, different manifestations were seen that might benefit from being documented using larger samples and being tested for clinical relevance.

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 Postextraction Alveolar Ridge Preservation: Biological Basis and Treatments

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Giorgio Pagni ◽  
Gaia Pellegrini ◽  
William V. Giannobile ◽  
Giulio Rasperini
Keyword(s):  
Tooth Extraction ◽  
Alveolar Bone ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Implant Placement ◽  
Conscious Decision ◽  
Alveolar Ridge Preservation ◽  
Immediate Implant ◽  
Implant Therapy ◽  
Bone Structures

Following tooth extraction, the alveolar ridge undergoes an inevitable remodeling process that influences implant therapy of the edentulous area. Socket grafting is a commonly adopted therapy for the preservation of alveolar bone structures in combination or not with immediate implant placement although the biological bases lying behind this treatment modality are not fully understood and often misinterpreted. This review is intended to clarify the literature support to socket grafting in order to provide practitioners with valid tools to make a conscious decision of when and why to recommend this therapy.

Which is the best choice after tooth extraction, immediate implant placement or delayed placement with alveolar ridge preservation? A systematic review and meta-analysis

2019 ◽  
Vol 47 (11) ◽  
pp. 1793-1802 ◽  
Author(s):  
João Vitor dos Santos Canellas ◽  
Paulo Jose D'Albuquerque Medeiros ◽  
Carlos Marcelo da Silva Figueredo ◽  
Ricardo Guimaraes Fischer ◽  
Fabio Gamboa Ritto
Keyword(s):  
Systematic Review ◽  
Tooth Extraction ◽  
Meta Analysis ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Implant Placement ◽  
Alveolar Ridge Preservation ◽  
Immediate Implant

Comparison of Dehydrated Human Amnion-Chorion and Type 1 Bovine Collagen Membranes in Alveolar Ridge Preservation: A Clinical and Histological Study

2020 ◽  
Author(s):  
Samer A Faraj ◽  
Ahmad Kutkut ◽  
Robert Taylor ◽  
Alejandro Villasante-Tezanos ◽  
Sarandeep Huja ◽  
...  
Keyword(s):  
Collagen Membrane ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Human Amnion ◽  
Bovine Collagen ◽  
Implant Placement ◽  
Alveolar Ridge Preservation ◽  
Significant Difference ◽  
Delayed Implant Placement

Alveolar ridge preservation maintains ridge dimensions and bone quality for implant placement. The aim of this randomized controlled clinical study is to compare the use of a human amnion-chorion membrane to a collagen membrane in an exposed-barrier ridge preservation technique.  Furthermore, this study will determine if intentional membrane exposure compromises ridge dimensions and bone vitality.Forty-three patients requiring extraction and delayed implant placement were randomly assigned into either the experimental or control group. Twenty-one participants received human amnion-chorion membrane (test) during ridge preservation while twenty-two participants received the collagen membrane (control). In both groups, demineralized freeze-dried bone allografts were used to graft the socket and primary closure was not achieved.The patients underwent implant placement after an average healing period of 19.5 weeks, and 2.7 X 8-mm core bone specimens were obtained for histomorphometric analyses. The clinical ridge dimensions were measured after extraction and at the time of delayed implant placement. No significant difference was observed in the mean vital bone formation between the experimental (51.72 ± 8.46%) and control (49.96 ± 8.31%; P &gt; 0.05) groups. The bone height and width did not differ, as determined by clinical measurements (P &gt; 0.05). Using either a human amnion-chorion membrane or type 1 bovine collagen as the open barrier did not change healing, compromise ridge dimensions, or affect bone vitality between the two groups.

scholarly journals Comparison of the Efficacy of Platelet-Rich Fibrin and Bone Allograft for Alveolar Ridge Preservation after Tooth Extraction: A Clinical Trial

2020 ◽  
Author(s):  
Hassan Azangookhiavi ◽  
Safoura Ghodsi ◽  
Fatemeh Jalil ◽  
Yalda Dadpour
Keyword(s):  
Clinical Trial ◽  
Tooth Extraction ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Platelet Rich Fibrin ◽  
Implant Placement ◽  
Alveolar Ridge Preservation ◽  
Freeze Dried ◽  
Minimal Trauma ◽  
Significant Difference

Objectives: Bone remodeling after tooth extraction results in decreased ridge volume and complicates implant placement. Platelet-rich fibrin (PRF) is a rich source of autogenous cytokines and growth factors; it has been proven to effectively improve soft tissue healing and hard tissue regeneration. This study sought to compare the clinical application of freeze-dried bone allografts (FDBA) and PRF for alveolar ridge preservation after tooth extraction. Materials and Methods: This clinical trial was conducted on 32 patients presenting for the extraction of hopeless non-molar teeth. The teeth were extracted with minimal trauma, and the samples were randomly divided into two groups (n=16). Tooth sockets were filled with either FDBA or PRF (prepared using 10cc of the patient’s blood). Bone regeneration was assessed by evaluating changes in horizontal and vertical bone dimensions after 12 weeks (the time of implant placement) using an acrylic stent fabricated before tooth extraction and a periodontal probe. The results were compared by repeated-measures analysis of variance (ANOVA; P<0.05). Results: Ridge width showed a significant reduction compared to the baseline in both groups (P=0.001); ridge height changes were not significant (P>0.05). The evaluated groups did not show any significant difference in height/width changes (P>0.05). Conclusion: The results showed an acceptable efficacy for PRF without graft materials in alveolar ridge preservation. This material is cost-effective and could be easily prepared. PRF application in extraction sockets yielded similar results to FDBA.

scholarly journals Dimensional Changes of the Soft Tissue after Alveolar Ridge Preservation with a Collagen Material. A Clinical Randomized Trial

2018 ◽  
Vol 12 (1) ◽  
pp. 389-399
Author(s):  
Sigmar Schnutenhaus ◽  
Thomas Martin ◽  
Jens Dreyhaupt ◽  
Heike Rudolph ◽  
Ralph G. Luthardt
Keyword(s):  
Soft Tissue ◽  
Tooth Extraction ◽  
Dimensional Change ◽  
Control Group ◽  
Collagen Membrane ◽  
Ridge Preservation ◽  
Alveolar Ridge ◽  
Soft Tissue Volume ◽  
Alveolar Ridge Preservation ◽  
Significant Difference

Background: Reduction of the soft tissue is an unavoidable consequence of tooth extraction without appropriate measures of Alveolar Ridge Preservation (ARP). Objectives: The objective of this study is the volumetric investigation of the dimensional change of the soft tissue post tooth extraction to compare an Alveolar Ridge Preservation (ARP) measure with the insertion of a combination material with a collagen cone to fill the alveolus, combined with a collagen membrane, with untreated extraction alveoli. Methods: In the context of a randomized clinical trial, 31 patients were treated with the combination material directly post tooth extraction in the maxilla (ARP). In 29 further patients, the extraction alveoli were left without further measures (control group). The changes of the soft tissue contour were measured 6 (+/- 1) weeks post extraction. The measurements were performed by superimposing digital models. The groups were compared using the Wilcoxon rank-sum-test. Results: The premolar subgroup revealed a significant difference of the soft tissue dimension post insertion of a collagen material into the alveolus in comparison to untreated alveoli. In these cases, the mean loss of soft tissue volume after use of the collagen material was significantly lower. Conclusion: The proposed hypothesis that there is a difference of the soft tissue preservation between alveoli with and without the use of a collagen material can be accepted with restrictions to the premolar region. A statistically significant lower volume reduction of the soft tissue by implantation of the collagen material could be detected with premolars.

Sign in / Sign up

Export Citation Format

Share Document