scholarly journals Implant Stability Parameters & Bone Density Values of Different Graft Materials with Immediately Placed Dental Implants

2018 ◽  
Vol 64 (4) ◽  
pp. 3135-3148
Author(s):  
Omnia Sultan ◽  
Ingy Chehata ◽  
Ahmed Hossam
Keyword(s):  
Bone Density ◽  
Dental Implants ◽  
Implant Stability ◽  
Stability Parameters ◽  
Density Values

scholarly journals Association between Bone Density Values, Primary Stability and Histomorphometric Analysis of Dental Implant Osteotomy Sites on the Upper Jaw

Folia Medica ◽  
2020 ◽  
Vol 62 (3) ◽  
pp. 563-571
Author(s):  
Vasilena Ivanova ◽  
Ivan Chenchev ◽  
Stefan Zlatev ◽  
Dimitar Atanasov
Keyword(s):  
Bone Density ◽  
Dental Implants ◽  
Bone Quality ◽  
Mechanical Stability ◽  
Primary Stability ◽  
Bone Allograft ◽  
Histomorphometric Analysis ◽  
Socket Preservation ◽  
Density Values ◽  
Protein Rich

Introduction: Sufficient bone volume, as well as the bone quality characteristics are necessary prerequisites to ensure optimal mechanical stability of the implants and subsequent osseointegration. Aim: The aim of the present study was to assess the correlation between bone density values obtained by cone-beam computed tomography (CBCT), the primary stability of dental implants and the histomorphometric analysis of bone quality. Materials and methods: Following tooth extraction, socket preservation with frieze-dried bone allograft or protein-rich fibrin (PRF) was performed on 30 patients with 30 maxillary teeth in the region from second premolar to second premolar. Four months after the procedure, CBCT was used to assess the bone density (Hounsfield units) in the area of extraction. Thirty bone samples were harvested from implant sites using a trephine drill. They were analyzed with Image J software. Immediately after placing the implant, the implant stability quotient was measured using the Osstell Idx device. Results: The results revealed significant correlations between bone density and primary stability along the vestibulo-oral (r=0.392, p=0.032) and mesiodistal axes (r=0.407, p=0.026). Bone density also correlated strongly with the percentage of newly formed bone (r=0.776, p<0.001). Conclusion: Bone quality, in terms of bone density measured in CBCT and new bone formation are correlated to the primary stability of the dental implants and vice versa.

scholarly journals Applicability of cone beam computed tomography gray values for estimation of primary stability of dental implants

2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Mahnaz Sheikhi ◽  
Mehdi Karami ◽  
Somayeh Abbasi ◽  
Amirhossein Moaddabi ◽  
Parisa Soltani
Keyword(s):  
Computed Tomography ◽  
Bone Density ◽  
Dental Implants ◽  
Cone Beam Computed Tomography ◽  
Primary Stability ◽  
Cone Beam ◽  
Insertion Torque ◽  
Implant Stability ◽  
Preoperative Selection ◽  
Gray Values

Objective: To evaluate the relationship between bone density measured by computed tomography (CT) and cone beam computed tomography (CBCT) (Sirona’s Galileos scanner) with primary stability of dental implants. Material and methods: 20 fresh bovine femoral heads were prepared by removal of soft tissue, sectioning of the bone, and placement of markers for location and angulation of implants. Bone density of peri-implant areas was determined preoperatively by CT and CBCT scanning of the prepared bone samples represented by Hounsfield units (HUs) and gray values (GVs), respectively. Then, 60 implants in three sizes (diameter = 4 mm, length = 8, 10, and 12 mm) were inserted into the bones and maximum insertion torque (IT) was recorded. Osstell device was also used for determining the implant stability quotient (ISQ) for each implant. Statistical analysis was performed on the data (alpha = 0.05). Results: Mean ± SD values of GV, HU, and ISQ were 1592.75 ± 231.82, 675.26 ± 115.38 and 61.90 ± 10.14, respectively. Moreover, the most frequent IT limit was 30-35 Ncm (41.4%). Significant relationships were observed between HU and IT, GV and IT, HU and ISQ, GV and ISQ, and IT and ISQ in all implant sizes. Moreover, GV and HU also significantly correlated to each other. Conclusion: Bone density values in CBCT and CT scans are positively associated to primary stability of dental implants. Therefore, GVs obtained from Galileos CBCT scanner can be used for preoperative selection of edentulous sites which allow for better implant stability or locations which require further procedures for enhancing the success rate of dental implants.  KEYWORDSComputed tomography; Cone beam computed tomography; Dental implant.

The Effect of Varying Implant Position in Immediately Loaded Implant-Supported Mandibular Overdentures

2013 ◽  
Vol 39 (3) ◽  
pp. 345-354 ◽  
Author(s):  
Mohammed A. Shaarawy ◽  
Ehab M. Aboelross
Keyword(s):  
Patient Satisfaction ◽  
Bone Density ◽  
Dental Implants ◽  
Wide Distribution ◽  
Emg Activity ◽  
Implant Position ◽  
Density Values ◽  
Group 2 ◽  
Edentulous Patients ◽  
Group 1

This study was carried out to evaluate the effect of varying implant position in immediately loaded implant-supported mandibular overdentures on peri-implant bone density, muscle activity, and patient satisfaction. Fourteen completely edentulous patients were selected for the study. After complete denture construction, patients were divided into 2 equal groups. Four dental implants were installed bilaterally in the interforaminal region in the first group, while in the second group, 4 dental implants were inserted bilaterally: 2 in the interforaminal region and 2 in the first molar area. Immediately after suturing, telescopic abutments were screwed to the implants, and the retaining caps were picked up into the fitting surface of the lower denture, which was delivered to the patient. Patients were recalled for radiographic bone density evaluation just after denture delivery and then at 3, 6, and 12 months thereafter. Muscle activities of masseter and temporalis muscles as well as patient satisfaction were also evaluated. The results of the study showed a high success rate approximating 98.2% of the immediately loaded implants. The electromyographic (EMG) records of both muscles in group 1 were significantly higher during chewing hard food after 3 months compared with group 2 (P &lt; .05). Bone density changes were comparable in the 2 groups except at the end of the follow-up period, when group 2 showed a significant increase in peri-implant bone density values of the posteriorly placed implants compared with group 1 (P &lt; .05). From the results of this study, it may be concluded that wide distribution of immediately loaded implants used for supporting mandibular overdentures through posterior placement beyond the interforaminal area results in a favorable response in terms of increased peri-implant bone density as well as decreased EMG activity of masseter and temporalis muscles.

scholarly journals Clinical Relevance of Bone Density Values from CT Related to Dental Implant Stability: A Retrospective Study

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Vincenzo Bruno ◽  
Cesare Berti ◽  
Carlo Barausse ◽  
Mauro Badino ◽  
Roberta Gasparro ◽  
...  
Keyword(s):  
Bone Density ◽  
Surgical Technique ◽  
Cortical Thickness ◽  
Preoperative Assessment ◽  
Insertion Torque ◽  
Implant Stability ◽  
Bone Thickness ◽  
Positive Correlation ◽  
Predictive Parameters ◽  
Density Values

Purpose. The majority of the techniques used to assess the primary implant stability are subjective and empirical and can be used during or after the surgery. The aim of this study is to evaluate the bone density prior to surgery, in order to give recommendations to the clinician about the best surgical technique and the type of implant which is needed. Materials and Methods. A surgeon operated on 75 patients for 269 implants over the period 2010–2014. He required a CT to plan the surgery and he documented the type, the diameters, and the lengths of the implants, the insertion torque, and the ISQ values. At a later stage another clinician measured bone density and cortical thickness. We endeavoured to get the most accurate superimposition between the implants placed by the surgeon and those placed by the clinician. Results. In maxilla ISQ showed a significant positive correlation with HU values detected for coronal-buccal (r=0.302; p=0.020) and middle-lingual (r=0.295; p=0.023). Torque showed a positive correlation with cortical bone thickness at the middle of the ridge (ρ=0.196; p=0.032). Conclusion. It is important to take into consideration the Hounsfield Units and the cortical thickness as predictive parameters during the preoperative assessment, with regard to the choice of the implant type as well as the surgical technique.

scholarly journals Relationship between cortical bone thickness or computerized tomography-derived bone density values and implant stability

2010 ◽  
Vol 21 (6) ◽  
pp. 612-617 ◽  
Author(s):  
Joe Merheb ◽  
Nele Van Assche ◽  
Wim Coucke ◽  
Reinhilde Jacobs ◽  
Ignace Naert ◽  
...  
Keyword(s):  
Bone Density ◽  
Cortical Bone ◽  
Computerized Tomography ◽  
Implant Stability ◽  
Bone Thickness ◽  
Cortical Bone Thickness ◽  
Density Values

Implant-supported Fixed Prosthetic Treatment Using Very Small-diameter Implants: A Case Report

10.1563/778.1 ◽  
2006 ◽  
Vol 32 (1) ◽  
pp. 34-37 ◽  
Author(s):  
Dennis Flanagan
Keyword(s):  
Case Report ◽  
Bone Density ◽  
Dental Implants ◽  
Small Diameter ◽  
Implant Stability ◽  
Immediate Implant

Abstract A case report is presented where an edentulous mandibular anterior site is restored with very small- or mini-diameter (1.8-mm) dental implants. The surgical and prosthetic use of very small-diameter dental implants is discussed. Such implants can be successfully used in appropriate sites where there is adequate bone density for immediate implant stability and an implant-protected occlusal scheme.

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