scholarly journals Increasing the Stability of Dental Implants: the Concept of Osseodensification

2017 ◽  
Vol 21 (3) ◽  
pp. 133-140 ◽  
Author(s):  
Leonidas Podaropoulos
Keyword(s):  
Surgical Technique ◽  
Dental Implants ◽  
Surgical Techniques ◽  
Primary Stability ◽  
Rigid Fixation ◽  
Low Density ◽  
Success Rates ◽  
Promising Technique ◽  
The Stability ◽  
Implant Bed

Summary One of the most important factors that affect osseointegration is the primary stability of the implant. Dental implants inserted at the posterior region of the maxilla exhibit the lowest success rates as the low density bone in this area often jeopardize rigid fixation of the implant. Many surgical techniques have been developed to increase the primary stability of an implant placed in low density bone, such as bicortical fixation of the implant, undersized preparation of the implant bed and bone condensation by the use of osteotomes. A new promising technique, named osseodensification, has been recently developed that creates an autograft layer of condensed bone at the periphery of the implant bed by the aid of specially designed burs rotating in a clockwise and anti-clockwise direction. The purpose of this review is to emphasize that implant primary stability is strongly influenced by the surgical technique, to quote and briefly analyse the various surgical procedures laying weight to osseodensification procedure.

scholarly journals Comparative radiographic and resonance frequency analyses of the peri-implant tissue after dental implants placement using flap and flapless techniques: An experimental study on domestic pigs

2013 ◽  
Vol 70 (6) ◽  
pp. 586-594 ◽  
Author(s):  
Zoran Vlahovic ◽  
Branko Mihailovic ◽  
Zoran Lazic ◽  
Mileta Golubovic
Keyword(s):  
Bone Resorption ◽  
Resonance Frequency ◽  
Dental Implants ◽  
Dental Implant ◽  
Surgical Techniques ◽  
Primary Stability ◽  
Implant Stability ◽  
Domestic Pigs ◽  
Flap Technique ◽  
Implant Placement

Background/Aim. Flapless implant surgery has become very important issue during recent years, mostly thanks to computerization of dentistry and software planning of dental implants placements. The aim of this study was to compare flap and flapless surgical techniques for implant placement through radiographic and radiofrequency analyses. Methods. The experiment was made in five domestic pigs. Nine weeks following domestic pigs teeth extraction, implants were placed, on the right side using surgical technique flap, and flapless on the left side. Digital dental Xrays were applied to determine primary dental implant stability quality (ISQ). At certain intervals, not later than three months, the experimental animals were sacrificed, and just before it, control X-rays were applied to measure dental implants stability. Results. Radiographic analysis showed that peri-implant bone resorption in the first 4 weeks following placement implants with flap and flapless surgical techniques was negligible. After the 3 months, mean value of peri-implant bone resorption of the implants placed using flap technique was 1.86 mm, and of those placed using flapless technique was 1.13 mm. In relation to the primary dental implant stability in the first and second week there was an expected decrease in ISQ values, but it was less expressed in the dental implants placed using the flapless technique. In the third week the ISQ values were increased in the dental implants placed by using both techniques, but the increase in flapless implant placement was higher (7.4 ISQ) than in flap implant placement (1.5 ISQ). The upward trend continued in a 4- week period, and after 3 months the dental implant stability values in the implants placed using flap technique were higher than the primary stability for 7.1 ISQ, and in the implants placed using flapless technique were higher comparing to the primary stability for 10.1 ISQ units. Conclusion. Based on the results of radiographic and resonance frequency analyses it can be concluded that the flapless technique in surgical implants placemat, leads to better results.

Developing Stability of Posterior Mandibular Implants Placed With Osteotome Expansion Technique Compared With Conventional Drilling Techniques

2017 ◽  
Vol 43 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Yen-Ting Lin ◽  
Adrienne Hong ◽  
Ying-Chin Peng ◽  
Hsiang-Hsi Hong
Keyword(s):  
Bone Density ◽  
Surgical Techniques ◽  
Primary Stability ◽  
Conventional Technique ◽  
Implant Stability ◽  
Implant Stability Quotient ◽  
Expansion Technique ◽  
The Stability ◽  
Conventional Drilling ◽  
Secondary Stability

Clinical decisions regarding the stability and osseointegration of mandibular implants positioned using the bone expansion techniques are conflicting and limited. The objective was to evaluate the stability of implants placed using 2 surgical techniques, selected according to the initial width of the mandibular posterior edentulous ridge, with D3 bone density, during a 12-week period. Fifty-eight implants in 33 patients were evaluated. Thirty-two implants in 24 patients were positioned using the osteotome expansion technique, and 26 fixtures in 17 patients were installed using the conventional drilling technique. The implant stability quotient values were recorded at weeks 0, 1, 2, 3, 4, 6, 8, 10, and 12 postsurgery and evaluated using analysis of variance, independent, and paired t tests. Calibrated according to the stability reading of a 3.3-mm diameter implant, the osteotome expansion group was associated with a lower bone density than the conventional group (64.96 ± 6.25 vs 68.98 ± 5.06, P = .011). The osteotome expansion group achieved a comparable primary stability (ISQb-0, P = .124) and greater increases in secondary stability (ISQb-12, P = .07) than did the conventional technique. A D3 quality ridge with mild horizontal deficiency is expandable by using the osteotome expansion technique. Although the 2 groups presented similar implant stability quotient readings during the study period, the osteotome expansion technique showed significant improvement in secondary stability. The healing patterns for these techniques are therefore inconsistent.

scholarly journals Influence of Insertion Torque on Clinical and Biological Outcomes before and after Loading of Mandibular Implant-Retained Overdentures in Atrophic Edentulous Mandibles

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Fernanda Faot ◽  
Amália Machado Bielemann ◽  
Alessandra Julie Schuster ◽  
Raissa Micaella Marcello-Machado ◽  
Altair Antoninha Del Bel Cury ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Dental Implants ◽  
Survival Rates ◽  
Rank Correlation ◽  
Primary Stability ◽  
Insertion Torque ◽  
Success Rates ◽  
Implant Stability ◽  
Before And After ◽  
Edentulous Patients

Aim. To evaluate the influence of primary insertion torque (IT) values of narrow dental implants on the peri-implant health, implant stability, immunoinflammatory responses, bone loss, and success and survival rates. Methods. Thirty-one edentulous patients received two narrow implants (2.9x10mm, Facility NeoPoros) to retain mandibular overdentures. The implants were categorized in four groups according to their IT: (G1) IT > 10 Ncm; (G2) IT ≥ 10Ncm and ≤ 30 Ncm; (G3) IT >30Ncm and < 45Ncm; (G4) IT ≥ 45Ncm, and all implants were loaded after 3 months of healing. The following clinical outcomes were evaluated 1, 3, 6, and 12 months after implant insertion: (i) peri-implant tissue health (PH), gingival index (GI), plaque index (PI), calculus presence (CP), probing depth (PD), and bleeding on probing (BOP); (ii) implant stability quotient (ISQ) by resonance frequency analysis; and (iii) IL-1β and TNF-α concentration in the peri-implant crevicular fluid. The marginal bone level (MBL) and changes (MBC) were evaluated. The Chi2 test, Kruskal-Wallis test, mixed-effects regression analysis, and the Kendall rank correlation coefficient were used for statistical analysis (α = 5%). Results. G1 presented the highest PD at all evaluated periods. G2 presented higher PI at month 6 and 12. G4 showed increased GI at month 3 and 12 and more CP at month 1 (p=.003). G2 and G4 had higher ISQ values over the study period, while those from G1 and G3 presented lower ISQ values. The IL-1β concentration increased until month 12 and was independent of IT and bone type; G4 had a higher IL-1β concentration in month 3 than the other groups (p=.015). The TNF-α release was negatively correlated with IT, and TNF-α release was highest in G1 at month 12. The MBL immediately after surgery and the MBC at month 12 were similar between the groups, and G4 presented a positive MBC at month 12. The survival and success rates were 75% for G1, 81.3% for G2, 64.3% for G3, and 95% for G4. Conclusion. The IT did not influence the clinical outcomes and the peri-implant immunoinflammatory responses and was weakly correlated with the narrow dental implants primary stability. The observed success rates suggest that the ideal IT for atrophic fully edentulous patients may deviate from the standardized IT of 32 Ncm.

scholarly journals Does the Osseodensification Technique Allow for the use of a Healing Chamber with Primary Stability in Low-Density Bone? An in Vivo Study

2021 ◽  
Author(s):  
Rafael Coutinho Mello-Machado ◽  
Suelen Cristina Sartoretto ◽  
Jose Mauro Granjeiro ◽  
José Albuquerque Calasans-Maia ◽  
Marcelo Jose Guedes Pinheiro Uzeda ◽  
...  
Keyword(s):  
Bone Remodeling ◽  
Bone Growth ◽  
Primary Stability ◽  
Insertion Torque ◽  
Low Density ◽  
Implant Stability ◽  
Bone Implant ◽  
Implant Stability Quotient ◽  
Implant Bed

Abstract This study aimed to investigate in vivo the hypothesis that the osseodensification technique, through a wider osteotomy, produce healing chambers at the implant-bone interface with no impact on primary stability osseointegration in low-density bone. Twenty implants (3.5 x 10 mm) presenting nanohydroxyapatite (nHA) surface were inserted in the ilium of ten sheep, after preparation of a 2.7-mm wide implant bed with conventional subtractive drilling (SCD) or a 3.8-mm wide implant bed with an osseodensification bur system (OBS) (n = 5/group/period). The final insertion torque (IT) and implant stability quotient (ISQ) evaluated the primary implant stability. After 14 and 28 days, the bone samples containing the implants were processed for histological and histomorphometric evaluation of bone implant contact (BIC) and bone area fraction occupancy (BAFO). No significant differences occurred between the implant bed preparations regarding IT and ISQ (P > 0.05). Histological analysis showed bone remodeling, and bone growth in all samples with no inflammatory infiltrate. BIC values were higher for SCD after 14 and 28 days (p < 0.05), however BAFO values were similar on both groups (p > 0.05). It was possible to conclude that the osseodensification technique allowed a wider implant bed preparation with no prejudice on primary stability and bone remodeling.

scholarly journals Comparative investigation of primary stability of four different dental implants in low-density bone model

2019 ◽  
Vol 16 (1) ◽  
pp. 18 ◽  
Author(s):  
Faezeh Atri ◽  
Saied Nokar ◽  
AmiraliReza Rasouli-Ghahroudi ◽  
Elham Shidvash
Keyword(s):  
Dental Implants ◽  
Primary Stability ◽  
Comparative Investigation ◽  
Low Density ◽  
Bone Model

Effect of a Modified Stepped Osteotomy on the Primary Stability of Dental Implants in Low-Density Bone: A Cadaver Study

2015 ◽  
Vol 30 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Chad Boustany ◽  
Hal Reed ◽  
Geoffrey Cunningham ◽  
Mark Richards ◽  
Ali Kanawati
Keyword(s):  
Dental Implants ◽  
Primary Stability ◽  
Cadaver Study ◽  
Low Density

scholarly journals An In Vitro Evaluation of Primary Stability Values for Two Differently Designed Implants to Suit Immediate Loading in Very Soft Bone

2021 ◽  
Vol 9 (1) ◽  
pp. 5
Author(s):  
Dirk Krischik ◽  
Selen Ergin Tokgöz ◽  
Andreas van Orten ◽  
Anton Friedmann ◽  
Hakan Bilhan
Keyword(s):  
Dental Implants ◽  
Primary Stability ◽  
Poor Quality ◽  
Immediate Loading ◽  
Standard Protocol ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Sufficient Stability ◽  
Implant Bed

The achievement of sufficient implant stability in poor quality bone seems to be a challenge. Most manufacturers develop special dental implants, which are claimed to show higher stability even in very soft bone. The aim of this experimental study was to compare two recently introduced dental implants with differing thread designs. A total of 11 implants of each group were inserted in the part of the fresh bovine ribs, corresponding to very soft bone. The primary stability was measured with resonance frequency analysis (RFA) and Periotest; the average of two measurements for each method and for each implant was taken and statistical analysis was applied. The highest stability values were obtained with the ICX Active Master implants, followed by the Conelog® Progressive-Line implants placed with the very soft bone protocol. The primary stability values of the Conelog® Progressive-Line implants inserted by the very soft bone protocol and the ICX Active Master implants placed with the standard protocol showed sufficient stability for immediate loading in low-density bone. Within the limitations of this study, the thread design of the implants and underdimensioned implant bed preparation seem to be effective for better primary stability in cancellous bone.

scholarly journals Evaluation of the primary stability in dental implants placed in low density bone with a new drilling technique, Osseodensification: an in vitro study

2020 ◽  
pp. 0-0
Author(s):  
J. Barberá-Millán ◽  
C. Larrazábal-Morón ◽  
JJ. Enciso-Ripoll ◽  
E. Pérez-Pevida ◽  
D. Chávarri-Prado ◽  
...  
Keyword(s):  
Dental Implants ◽  
In Vitro Study ◽  
Primary Stability ◽  
Vitro Study ◽  
Low Density ◽  
Drilling Technique

scholarly journals CLINICAL STUDIES OF THE STABILITY AND PROCESS OF OSTEOINTEGRATION OF DENTAL IMPLANTS DURING IMMEDIATE AND DELAYED IMPLANTATION

2021 ◽  
Vol 16 (4) ◽  
pp. 97-103
Author(s):  
Petr Grishin ◽  
Elena Kalinnikova
Keyword(s):  
Dental Implants ◽  
Clinical Studies ◽  
Alveolar Bone ◽  
Primary Stability ◽  
Implant Surface ◽  
Delayed Implantation ◽  
Clinical Observations ◽  
Osseointegrated Implants ◽  
Surface Microstructures ◽  
The Stability

Subject. Analysis of the literature confirms that there is a definite relationship between surface microstructure, implant geometry, thread design and primary stability, and osseointegration processes. To date, a sufficient number of works on direct and delayed implantation have accumulated. However, there is not enough convincing clinical data on the quantitative assessment of primary stability at different periods of the osseointegration process. Despite the existence of experimental and clinical observations, it seems impossible to make a definite judgment about the mechanism of such a relationship. This chapter presents clinical studies of the stability and osseointegration of dental implants when performing, according to the indications, in 414 patients of direct and delayed implantation using implant systems with different surface microstructures. Goal. Conduct clinical studies of quantitative indicators of stability and osseointegration of implants with different microstructure of the surface during direct and delayed implantation. Methodology. For the clinical study of primary stability and the process of osseointegration during direct and delayed implantation with immediate functional loading, implant systems with different surface microstructures were used: Alfa Bio, Mis, Astra-Tech, Dentium, Ostem, Antogher, and also Humana Dental with an innovative surface. Osseointegrated implants have been used to achieve a predictable treatment outcome in clinical cases with partial or complete adentia, as well as in the presence of single, included defects. Results. There were no significant differences in stability indicators at the time of implant placement in the alveolar bone, depending on the type of implant and the method of implantation. Conclusions. In the process of integration of the implant into the bone tissue at a later date, the indicators of stability and osseointegration improve. The relationship between the appearance of the implant surface, primary stability and the time of its adaptation was revealed.

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