Alveolar Ridge Preservation of Maxillary Molars for Implant Placement Without Sinus Lift Surgery: Case series

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.

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Efficacy of Alveolar Ridge Preservation: A Randomized Controlled Trial

Journal of Dental Research ◽

10.1177/0022034520905660 ◽

2020 ◽

Vol 99 (4) ◽

pp. 402-409 ◽

Cited By ~ 7

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).

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Alveolar Ridge Preservation Using Leukocyte and Platelet-Rich Fibrin: A Report of a Case

Case Reports in Dentistry ◽

10.1155/2011/345048 ◽

2011 ◽

Vol 2011 ◽

pp. 1-5 ◽

Cited By ~ 13

Author(s):

Mogammad Thabit Peck ◽

Johan Marnewick ◽

Lawrence Stephen

Keyword(s):

Wound Healing ◽

Disease Transmission ◽

Ridge Preservation ◽

Alveolar Ridge ◽

Platelet Rich Fibrin ◽

Implant Placement ◽

Alveolar Ridge Preservation ◽

Tissue Changes ◽

Risk Of Disease ◽

Soft Tissue Changes

In order for a dental implant to be restored optimally, it must be placed in an ideal anatomic position. However, this is not always possible, since physiological wound healing after tooth removal, often results in hard and soft tissue changes which ultimately compromises ideal implant placement. With the aim of minimising the need for tissue augmentation, several alveolar ridge preservation (ARP) techniques have been developed. These often require the use of grafting material and therefore increase the risk of disease transmission. Leukocyte and platelet-rich fibrin (L-PRF) is a newly developed platelet concentrate that is prepared from the patient's own blood. Clinical research has indicated that it improves wound healing and stimulates bone formation. We present a case where L-PRF was successfully used in an ARP procedure to facilitate implant placement in a compromised extraction socket.

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

Dentistry Journal ◽

10.3390/dj8040112 ◽

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.

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