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

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

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.

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

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.

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.

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

2017 ◽  
Vol 43 (3) ◽  
pp. 186-193 ◽  
Author(s):  
Rosa-María Díaz-Sánchez ◽  
José-María Delgado-Muñoz ◽  
Pilar Hita-Iglesias ◽  
Kyle T. Pullen ◽  
María-Ángeles Serrera-Figallo ◽  
...  
Keyword(s):  
Primary Stability ◽  
Titanium Implants ◽  
Implant Design ◽  
Prospective Clinical Study ◽  
Implant Stability ◽  
Implant Stability Quotient ◽  
Implant Placement ◽  
Cone Beam Computerized Tomography ◽  
Surrounding Bone ◽  
Type Classification

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.

scholarly journals Implant Stability in the Posterior Maxilla: A Controlled Clinical Trial

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Raquel Zita Gomes ◽  
Mario Ramalho de Vasconcelos ◽  
Isabel Maria Lopes Guerra ◽  
Rute Alexandra Borges de Almeida ◽  
Antonio Cabral de Campos Felino
Keyword(s):  
Primary Stability ◽  
Controlled Clinical Trial ◽  
Insertion Torque ◽  
Success Rates ◽  
Implant Stability ◽  
Native Bone ◽  
Posterior Maxilla ◽  
Group A ◽  
Group B ◽  
Secondary Stability

Aim. To evaluate the primary and secondary stability of implants in the posterior maxilla. Methods. Patients were allocated into three groups: (A) native bone, (B) partially regenerated bone, and (C) nearly totally regenerated bone. Insertion torque (IT) and implant stability quotient (ISQ) were measured at placement, to evaluate whether satisfactory high primary stability (IT ≥ 45 N/cm; ISQ ≥ 60) was achieved; ISQ was measured 15, 30, 45, and 60 days after placement, to investigate the evolution to secondary stability. Results. 133 implants (Anyridge®, Megagen) were installed in 59 patients: 55 fixtures were placed in Group A, 57 in Group B, and 21 in Group C. Fifty-two implants had satisfactory high primary stability (IT ≥ 45 N/cm; ISQ ≥ 60). A positive correlation was found between all variables (IT, ISQ at t = 0, t = 60), and statistically higher IT and ISQ values were found for implants with satisfactory high primary stability. Significant differences were found for IT and ISQ between the groups (A, B, and C); however, no drops were reported in the median ISQ values during the healing period. Conclusions. The evaluation of the primary and secondary implant stability may contribute to higher implant survival/success rates in critical areas, such as the regenerated posterior maxilla. The present study is registered in the ISRCTN registry with ID ISRCTN33469250.

Resonance Frequency Analysis of 208 Straumann Dental Implants During the Healing Period

2013 ◽  
Vol 39 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Ahmet Umut Guler ◽  
Mahmut Sumer ◽  
Ibrahim Duran ◽  
Elif Ozen Sandikci ◽  
Nazife Tuba Telcioglu
Keyword(s):  
Dental Implant ◽  
Implant Stability ◽  
Anterior Maxilla ◽  
Implant Placement ◽  
Healing Period ◽  
Posterior Maxilla ◽  
Significant Difference ◽  
Final Measurement ◽  
Diagnostic Benefit ◽  
Anterior Mandible

The most important prerequisite for the success of an osseointegrated dental implant is achievement and maintenance of implant stability. The aim of the study was to measure the 208 Straumann dental implant stability quotient (ISQ) values during the osseointegration period and determine the factors that affect implant stability. A total of 164 of the implants inserted were standard surface, and 44 of them were SLActive surface. To determine implant stability as ISQ values, measurements were performed at the stage of implant placement and healing periods by the Osstell mentor. The ISQ value ranges showed a significant increase during the healing period. Except for the initial measurement, the posterior maxilla had the lowest ISQ values, and there was no significant difference among anterior mandible, posterior mandible, and anterior maxilla (P &lt; .05). Implant length did not have a significant influence on ISQ value (P &gt; .05). The second measurement was significantly higher in men compared with women (P &lt; .05). The second measurement was significantly higher than the others at 4.8 mm, and for the final measurement, there were no significant differences between 4.8 and 4.1 mm, which were higher than 3.3 mm (P &lt; .05). When comparing sandblasted, large-grit, acid-etched (SLA) and SLActive surface implants, there were no significant differences for insertion measurements, but for second measurements, SLActive was significantly higher (P = 0), and for the final measurement, there was no significant difference. It appears that repeated ISQ measurements of a specific implant have some diagnostic benefit, and the factors that affect implant stability during the healing period are presented.

scholarly journals Preoperative Computed Tomography-Derived Bone Densities in Hounsfield Units at Implant Sites Acquired Primary Stability

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Kyou Hiasa ◽  
Yasuhiko Abe ◽  
Yohei Okazaki ◽  
Keisuke Nogami ◽  
Wataru Mizumachi ◽  
...  
Keyword(s):  
Primary Stability ◽  
Multiple Comparisons ◽  
Implant Stability ◽  
Hounsfield Units ◽  
Anterior Maxilla ◽  
Posterior Maxilla ◽  
Preoperative Ct ◽  
The Mean ◽  
Ct Data ◽  
Anterior Mandible

The purpose of this study was to evaluate preoperative CT-derived bone densities in Hounsfield units (HU) at implant sites that acquired primary stability, and to compare these values to the optimal bone densities proposed in the literature. Fifty-one patients, 18 males (37 implant sites) and 33 females (67 implant sites) between 2003 and 2010 were assessed. CT data for different jaw sections, regions, and operating procedures were compared using the Kruskal-Wallis test and Scheffe's test for multiple comparisons (P<0.05). The mean bone density in the maxilla was significantly lower than that in the mandible (P<0.05); the mean bone densities in the 4 jaw regions decreased in the following order: anterior mandible > anterior maxilla > posterior mandible > posterior maxilla. The bone densities assessed by HU fell into the range of optimal bone densities associated with acquired primary implant stability proposed in the literature.

scholarly journals Primary stability and PES/WES evaluation for immediate implants in the aesthetic zone: a pilot clinical double-blind randomized study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Arturo Sanchez-Perez ◽  
Ana I. Nicolas-Silvente ◽  
Carmen Sanchez-Matas ◽  
Silvia Molina-García ◽  
Carlos Navarro-Cuellar ◽  
...  
Keyword(s):  
Randomized Study ◽  
Primary Stability ◽  
Implant Design ◽  
Control Group ◽  
Double Blind ◽  
Anterior Maxilla ◽  
Immediate Implants ◽  
Bone Level ◽  
The Aesthetic ◽  
Secondary Stability

AbstractThe use of immediate implants in the aesthetic area is a technique widely used in modern implantology. The characteristics of the patient, the implant, and the surgical procedure used may influence the final results. The aim was to assess whether the implant design affects primary (P.S.) and secondary stability (S.S.), bone level (B.L.), and PES/WES evaluation. Twenty implants with two different designs (n = 10) were immediately placed and randomly located in the upper anterior maxilla with no grafting material. Implant-Stability-Quotient (ISQ), B.L., and Pink-Esthetic-Score/White-Esthetic-Score (PES/WES) were evaluated. Shapiro–Wilk normality test was performed to determine the sample normality, as the data did not follow a normal distribution, the Wilcoxon-Mann–Whitney test was applied (p < 0.05). ISQ was determined at placement (PS): control 59.1 (C.I.54.8–63.3); experimental 62.2(C.I.60.1–64.2) and three months after placement (SS): control 62.2.1 (C.I.53.3–71.0); experimental 67.2(C.I.65.8–68.5). The BL was measured at three months after placement: control 0.38 mm (C.I.− 0.06 to  + 0.83); experimental 0.76 mm (C.I.0.33–1.19) and at 12 months post-loading: control 0.07 mm (C.I.− 0.50–0.65); experimental 0.90 mm (C.I.0.38–1.42). PES/WES values were evaluated for the control group: 15 (C.I.12.68–17.32), and for the experimental group 15.20 (C.I.11.99–18.41). No significant differences were shown between both implant designs. A good grade of osseointegration and primary/secondary stability was achieved, as well as proper maintenance of crestal bone and adequate PES/WES scores. The criteria for selection for the ideal patient for immediate implant placement is essential.ClinicalTrials Protocol ID: NCT04343833.

scholarly journals Evaluation of the effectiveness of using platelet rich fibrin (PRF) as a sole grafting material and membrane in augmentation of dehiscence and fenestration defects encountered during dental implant surgery

2019 ◽  
Vol 31 (2) ◽  
pp. 44-51
Author(s):  
Ahmed M. Abbas ◽  
Salwan Y. Bede ◽  
Shefaa H. Alnumay
Keyword(s):  
Bone Regeneration ◽  
Primary Stability ◽  
Prospective Clinical Study ◽  
Graft Material ◽  
Implant Stability ◽  
Platelet Rich Fibrin ◽  
Significant Difference ◽  
The Mean ◽  
Dental Implant Surgery ◽  
Secondary Stability

Background: Bone regeneration in dehiscence and fenestration defect can be improved with the use of platelet rich fibrin (PRF) that provides a scaffold for new bone regeneration. This study was conducted to assess the effectiveness of PRF as a graft material and membrane in dehiscence and fenestration defects. Materials and Methods: This prospective clinical study included patients who received dental implants that demonstrated peri-implant defects which were augmented using Leukocyte- PRF (L-PRF) or Advanced-PRF (A-PRF). Twenty four weeks postoperatively the defect resolution and the density of regenerated bone were assessed by CBCT and re-entry surgery. The assessment also included measurement of primary and secondary implant stability using Periotest® M, success rate and complication rate of the installed implants. Results: The mean overall intraoperative defect size was 29.44 (± 14.1) mm2, postoperatively it became 2.07 (± 3.6) mm2 with a statistically significant difference (p= < 0.0001). There was no significant difference between L-PRF and A-PRF. Defect resolution ranged from 80% to 100% with a mean of 95.7% (± 6.7%). Defects that showed complete resolution were significantly smaller in size (21.2± 7 mm2) than those that showed partial resolution (44.4± 11 mm2). The overall mean primary stability recorded was 2.9 (± 1.6) Periotest values (PTV) and overall mean secondary stability was -0.22 (±1.4) (P<0.0001).The overall mean HU of the newly formed peri-implant bone was 385.7 (± 77.4). Conclusions: PRF as the sole graft material for peri-implant defects results in complete defect resolution in small to moderate defects, larger defects may require the addition of bone substitute to achieve complete defect resolution.

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

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).

scholarly journals Correlation between Primary, Secondary Stability, Bone Density, Percentage of Vital Bone Formation and Implant Size

2021 ◽  
Vol 18 (13) ◽  
pp. 6994
Author(s):  
Vasilena Ivanova ◽  
Ivan Chenchev ◽  
Stefan Zlatev ◽  
Eitan Mijiritsky
Keyword(s):  
Bone Density ◽  
Bone Formation ◽  
Linear Correlation ◽  
Bone Biopsy ◽  
Primary Stability ◽  
Implant Stability ◽  
Socket Preservation ◽  
Implant Placement ◽  
Significant Difference ◽  
Secondary Stability

Background: This study aims to evaluate whether there is a correlation between implant stability, bone density, vital bone formation and implant diameter and length. Methods: Ninety patients were enrolled in this study. They underwent a socket preservation procedure with allograft or PRF and after 4 months, a total of 90 implants were placed. CBCT scans were assigned prior to implant placement in order to assess the bone density. During the surgical re-entry, a bone biopsy was harvested with a trephine drill. Immediately after implant insertion, the primary stability was measured. The secondary stability was measured 4 months after implant placement. Results: Primary stability showed a significant positive linear correlation with bone density (r = 0.471, p < 0.001) as well as with percentage of new bone formation (r = 0.567, p < 0.001). An average significant association of secondary stability with bone density (rs = 0.498, p < 0.001) and percentage of newly formed bone (r = 0.477, p < 0.001) was revealed. The mean values of primary stability in all three implant sizes, regarding the diameter of the implants, were similar (narrow 67.75; standard 66.78; wide 71.21) with no significant difference (p = 0.262). The same tendency was observed for secondary stability (narrow 73.83; standard 75.25; wide 74.93), with no significant difference (p = 0.277). Conclusions: The study revealed a high correlation between primary and secondary implant stability, and bone density, as well as with the percentage of vital bone formation. Implant length and diameter revealed no linear correlation with the implant stability.

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