Improvement in the Initial Implant Stability Quotient Through Use of a Modified Surgical Technique

To ensure similar primary implant stability measured by resonance frequency analysis (RFA) could be obtained in different jawbone densities by using a specific surgical drilling protocol and, to correlate those RFA measurements with factors related to the implant design, width, and length, we are performed a 1-year prospective clinical study was carried out using 27 subjects. A total of 67 hydrophilic titanium implants were placed using a standard 2-stage implant placement protocol. The bone type at each implant site was determined by evaluation of a preoperative, high-resolution cone beam computerized tomography (CBCT) scan. A modified drilling protocol was used in softer bone (types 2, 3, and 4) that allowed for greater implant thread contact with the surrounding bone. The implant stability quotient (ISQ) was measured at 4 different times during the study: initially it was determined immediately after implant placement, then again at stage 2 uncovering surgery, then at 6 months' postplacement and, and finally at 1 year postplacement. Data collected immediately after implant surgery demonstrated a high correlation (R2 = .99) between the ISQ and bone type classification. An overall trend toward a higher ISQ was found over the 1-year study period for all types of bone. Implants remained clinically and radiographically stable during the 1-year study period. Our data allow conclude that the primary stability of 2-staged loaded implants placed in different bone types can be optimized by applying this surgical drilling protocol during the implant placement. The ISQ method was found to be a reliable predictor of implant stability.

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Influence of Implant Dimensions and Position on Implant Stability: A Prospective Clinical Study in Maxilla Using Resonance Frequency Analysis

Applied Sciences ◽

10.3390/app9050860 ◽

2019 ◽

Vol 9 (5) ◽

pp. 860 ◽

Cited By ~ 4

Author(s):

Antonio Nappo ◽

Carlo Rengo ◽

Giuseppe Pantaleo ◽

Gianrico Spagnuolo ◽

Marco Ferrari

Keyword(s):

Resonance Frequency ◽

Dental Implant ◽

Frequency Analysis ◽

Primary Stability ◽

Prospective Clinical Study ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Implant Stability Quotient ◽

Implant Placement ◽

Implant System

Implant stability is relevant for the correct osseointegration and long-term success of dental implant treatments. The aim of this study has been to evaluate the influence of implant dimensions and position on primary and secondary stability of implants placed in maxilla using resonance frequency analysis. Thirty-one healthy patients who underwent dental implant placement were enrolled for the study. A total of 70 OsseoSpeed TX (Astra Tech Implant System—Dentsply Implants; Mölndal, Sweden) implants were placed. All implants have been placed according to a conventional two-stage surgical procedure according to the manufacturer instructions. Bone quality and implant stability quotient were recorded. Mean implant stability quotient (ISQ) at baseline (ISQ1) was statistically significant lower compared to 3-months post-implant placement (ISQ2) (p < 0.05). Initial implant stability was significantly higher with 4 mm diameter implants with respect to 3.5 mm. No differences were observed within maxilla regions. Implant length, diameter and maxillary regions have an influence on primary stability.

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New Implant Design with Midcrestal and Apical Wing Thread for Increased Implant Stability in Single Postextraction Maxillary Implant

Case Reports in Dentistry ◽

10.1155/2019/9529248 ◽

2019 ◽

Vol 2019 ◽

pp. 1-4 ◽

Cited By ~ 1

Author(s):

Antonio Scarano ◽

Bartolomeo Assenza ◽

Francesco Inchingolo ◽

Filiberto Mastrangelo ◽

Felice Lorusso

Keyword(s):

Cortical Bone ◽

Dental Implant ◽

Alveolar Bone ◽

Primary Stability ◽

Implant Design ◽

Insertion Torque ◽

Fixture Design ◽

Implant Stability ◽

Implant Placement ◽

Immediate Placement

Background. The immediate placement of a dental implant could represent an option treatment for the rehabilitation of a postextractive missing tooth socket to replace compromised or untreatable teeth, with the advantage of single-session surgery. In this way, the anatomy of the alveolar bone defect, the preservation of the buccal cortical bone, and the primary stability of the fixture represent the critical factors that consent a precise implant placement. Objective. This case report describes a novel fixture design for postextractive alveolar socket immediate implant. Methods. Two patients (25 and 31 years old) were treated for postextractive dental implant placement to replace both central upper incisor teeth with four implants. The residual bone implant gap was not filled with graft or bone substitute. The restoration was provided following a standard loading protocol by a cement-sealed prosthetic abutment. Results. Clinically, all implants positioned showed an excellent insertion torque. No postoperative complications were reported. At 6 months of healing, the buccal cortical bone and the implant stability were present and well maintained. Conclusion. The evidence of this study allows us to underline the possible advantages of this new fixture design for postextractive implant technique.

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Influence of implant design, length, diameter, and anatomic region on implant stability: a randomized clinical trial

Revista Portuguesa de Estomatologia Medicina Dentária e Cirurgia Maxilofacial ◽

10.24873/j.rpemd.2021.01.816 ◽

2021 ◽

Vol 61 (1) ◽

Author(s):

André Moreira ◽

◽

José Rosa ◽

Filipe Freitas ◽

Helena Francisco ◽

...

Keyword(s):

Clinical Trial ◽

Primary Stability ◽

Implant Design ◽

Implant Stability ◽

Anterior Maxilla ◽

Implant Stability Quotient ◽

Relevant Effect ◽

Posterior Maxilla ◽

Significant Difference ◽

Secondary Stability

Objectives: To evaluate the influence of implant geometry and anatomical region on implant stability. Methods: A randomized controlled clinical trial was conducted on 45 patients, in whom a total of 79 implants were placed: 40 MIS C1 Implants and 39 MIS Seven Implants. The implant stability quotient was measured using resonance frequency analysis immediately after implant placement and 8 weeks later with an Osstell Mentor device. Results: 76 implants were analyzed. The implant stability quotient was statistically significantly higher for secondary stability than primary stability (68.7±8,6 vs. 65.2±10.3, respectively, p=0.023). Considering primary stability, no statistical differences were found between the implant lengths 8.0 mm, 10.0 mm, 11.0 mm, and 11.5 mm (67.9±7.6, 63.9±10, 57.2±11.1, and 66.4±11.3, respectively, p=0.312). The same was observed for secondary stability (68.4±9.4, 67.9±9.3, 74.7±1.5, and 69.2±7.9, respectively, p=0.504). Also, there were no statistically significant differences between the implant diameters 3.75 mm and 4.20 mm concerning primary stability (64.3±8.7 and 66.1±11.7 respectively, p=0.445) or secondary stability (68.8±8.2 and 68.7±9.1 respectively, p=0.930). Regarding implant design, a statistically significant difference was found only for secondary stability, favoring MIS Seven implants (p=0.048). The intraoral location was statistically significant for both primary and secondary stability, as these were higher on the anterior maxilla than the posterior maxilla and mandible (p<0.05). Conclusions: The diameter and length of the implants studied did not influence their stability. Implant design may influence secondary stability, whereas intraoral location has a relevant effect on primary and secondary stability.

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Influence of implant design, length, diameter, and anatomic region on implant stability: a randomized clinical trial

Revista Portuguesa de Estomatologia Medicina Dentária e Cirurgia Maxilofacial ◽

10.24873/j.rpemd.2021.03.822 ◽

2021 ◽

Vol 62 (1) ◽

Author(s):

André Moreira ◽

◽

José Rosa ◽

Filipe Freitas ◽

Helena Francisco ◽

...

Keyword(s):

Clinical Trial ◽

Primary Stability ◽

Implant Design ◽

Implant Stability ◽

Anterior Maxilla ◽

Implant Stability Quotient ◽

Relevant Effect ◽

Posterior Maxilla ◽

Significant Difference ◽

Secondary Stability

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Relation Between Insertion Torque and Implant Stability Quotient: A Clinical Study

European Journal of Dentistry ◽

10.1055/s-0041-1725575 ◽

2021 ◽

Author(s):

João Paulo do Vale Souza ◽

Clóvis Lamartine de Moraes Melo Neto ◽

Lucas Tavares Piacenza ◽

Emily Vivianne Freitas da Silva ◽

André Luiz de Melo Moreno ◽

...

Keyword(s):

Tooth Extraction ◽

Primary Stability ◽

Insertion Torque ◽

Resonance Frequency Analysis ◽

Implant Stability ◽

Significance Level ◽

Positive Correlation ◽

Implant Stability Quotient ◽

Implant Placement ◽

Secondary Stability

Abstract Objectives This study aimed to assess the relation between the insertion torque and implant stability quotient (ISQ recorded immediately and 6 months after implant placement). Materials and Methods Twenty-five patients over the age of 18 years were selected for this study. One implant was placed per patient after tooth extraction. The implant site needed 15 mm in height and 8 mm in width. All implants had the same size (11.5 × 3.75 mm) and brand (Hexagonal Morse cone, DSP Biomedical). The insertion torque (Ncm) and resonance frequency analysis (ISQ value) (Osstell Mentor) were used to assess the primary stability (on the day of surgery). After 6 months, ISQ value was used to assess the secondary stability of each implant. Statistical Analysis The insertion torque data were correlated with ISQ measurements by using Pearson’s correlation. The significance level was 5%. Results There was a positive correlation between insertion torque and initial ISQ (correlation: 0.457; p = 0.022); however, no correlation was found between insertion torque and final ISQ (p = 0.308). Conclusion The present study demonstrated that there is a positive correlation between the insertion torque and the initial ISQ. Therefore, the higher the insertion torque, the higher the initial ISQ (or vice versa).

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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

Vojnosanitetski pregled ◽

10.2298/vsp1306586v ◽

2013 ◽

Vol 70 (6) ◽

pp. 586-594 ◽

Cited By ~ 6

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.

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Primary Stability of Short Implants Inserted Using Piezoelectric or Drilling Systems: An In Vitro Comparison

Journal of Oral Implantology ◽

10.1563/aaid-joi-18-00157 ◽

2019 ◽

Vol 45 (4) ◽

pp. 259-266

Author(s):

Claudio Stacchi ◽

Matteo De Biasi ◽

Lucio Torelli ◽

Massimo Robiony ◽

Roberto Di Lenarda ◽

...

Keyword(s):

Cancellous Bone ◽

Operative Time ◽

Primary Stability ◽

Site Preparation ◽

Preparation Technique ◽

Implant Stability ◽

Implant Stability Quotient ◽

Custom Made ◽

Implant Site Preparation

The primary objective of the present in vitro study was to evaluate the influence of implant site preparation technique (drills vs ultrasonic instrumentation) on the primary stability of short dental implants with two different designs inserted in simulated low-quality cancellous bone. Eighty implant sites were prepared in custom-made solid rigid polyurethane blocks with two different low cancellous bone densities (5 or 15 pounds per cubic foot [PCF]), equally distributed between piezoelectric (Surgysonic Moto, Esacrom, Italy) and conventional drilling techniques. Two short implant systems (Prama and Syra, Sweden & Martina) were tested by inserting 40 fixtures of each system (both 6.0 mm length and 5.0 mm diameter), divided in the four subgroups (drills/5 PCF density; drills/15 PCF density; piezo/5 PCF density; piezo/15 PCF density). Insertion torque (Ncm), implant stability quotient values, removal torque (Ncm), and surgical time were recorded. Data were analyzed by 3-way ANOVA and Scheffé's test (α = 0.05). With slight variations among the considered dependent variables, overall high primary implant stability was observed across all subgroups. Piezoelectric instrumentation allowed for comparable or slightly superior primary stability in comparison with the drilling procedures in both implant systems. The Prama implants group showed the highest mean reverse torque and Syra implants the highest implant stability quotient values. Piezoelectric implant site preparation took prolonged operative time compared to conventional preparation with drills; among the drilling procedures, Syra system required fewer surgical steps and shorter operative time.

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Analysis of correlation between hounsfield units of CBCT scans and implant primary stability in implant stability quotient (ISQ)

Clinical Oral Implants Research ◽

10.1111/clr.182_13358 ◽

2018 ◽

Vol 29 ◽

pp. 297-297

Author(s):

Alexandre Campos Montenegro ◽

Mario Vieira Neto ◽

Gonçalo Pimentel Neto ◽

Silvana Pizzini Montenegro ◽

Kamila Temponi ◽

...

Keyword(s):

Primary Stability ◽

Implant Stability ◽

Hounsfield Units ◽

Implant Stability Quotient

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

Journal of Oral Implantology ◽

10.1563/aaid-joi-d-16-00101 ◽

2017 ◽

Vol 43 (2) ◽

pp. 131-138 ◽

Cited By ~ 1

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.

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Periotest Values of Implants Placed in Sockets Augmented with Calcium Phosphosilicate Putty Graft: A Comparative Analysis against Implants Placed in Naturally Healed Sockets

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1511 ◽

2014 ◽

Vol 15 (2) ◽

pp. 181-185 ◽

Cited By ~ 2

Author(s):

Lanka Mahesh ◽

TV Narayan ◽

Sagrika Shukla ◽

Georgios Kostakis

Keyword(s):

Comparative Analysis ◽

Primary Stability ◽

Implant Stability ◽

Implant Placement ◽

Healing Period ◽

Calcium Phosphosilicate

ABSTRACT Aim To measure implant stability using periotest values of implants placed in sockets augmented with calcium phosphosilicate putty (CPS Putty) as compared with implant stability in naturally healed sockets. Materials and methods Twenty two sockets were implanted with CPS Putty immediately after extraction. The sockets were re-entered after a healing period at 5 to 6 months (average 5.3 months) for implant placement. Periotest values were recorded during implant insertion to assess primary stability. These were compared with the Periotest values of 26 implants placed in 22 patients, with naturally healed sockets. Result Periotest values were significantly lower in the grafted group, indicating better implant stability in sites grafted with CPS putty. Conclusion Implant stability seems to be significantly higher in sockets augmented using CPS putty when compared to nongrafted sites. This suggests that socket grafting with CPS putty may enhance the quality of available bone for implantation. How to cite this article Mahesh L, Narayan TV, Kostakis G, Shukla S. Periotest Values of Implants Placed in Sockets Augmented with Calcium Phosphosilicate Putty Graft: A Comparative Analysis against Implants Placed in Naturally Healed Sockets. J Contemp Dent Pract 2014;15(2):181-185.

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