Relationship Between Primary Stability and Crestal Bone Loss of Implants Placed with High Insertion Torque: A 3-Year Prospective Study (original) (raw)
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The Journal of prosthetic dentistry, 2016
Different insertion and loading protocols have been used to implement implant therapy; the consequences of these methods are unclear. The purpose of this retrospective study was to compare the long-term outcomes of different implant insertion and loading protocols on crestal bone loss. This was a nonrandomized retrospective study investigating data of patients in a private practice. Data were collected by an independent Tel Aviv University group from the patient records of a general practitioner's private practice. A total of 1688 implants were inserted in 343 patients whose records met the inclusion criteria, that is, 1317 immediately placed implants (IP group), 310 early placed implants (EP group) placed 6 to 8 weeks after implant placement, and 61 delayed placement implants (DP group) placed 4 to 6 months after extraction. The groups were also divided by implant loading method, giving 1203 immediately loaded implants (IL group), 273 early loaded implants (EL group) loaded wit...
The International journal of oral & maxillofacial implants
This randomized clinical trial aimed to investigate the relationships between insertion torque, implant stability quotient (ISQ), and crestal bone loss (CBL) of implants placed in fresh or 12-week healed extraction sites. Forty patients were randomly assigned to one of two groups and had one implant placed immediately (test group, n = 20) or 12 weeks after extraction (control group, n = 20) at premolar or molar sites. For all implants, insertion torque and ISQ scores at insertion and loading were recorded. Patients were followed for up to 12 months. Implant success was 100% in both groups. No differences were observed concerning both ISQ at insertion and ISQ at loading. A stronger correlation was detected between ISQ at insertion and insertion torque in the postextractive group (R = 0.83), than in the delayed group (R = 0.39), while ISQ at loading and insertion torque showed no correlation. CBL at 12 months was significantly different between test (0.68 ± 0.43 mm) and control (0.40 ...
Comparison of Primary Stability of Two Different Implants DesignsA Prospective Clinical Study
JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH
Introduction: Any implant treatment must begin with successful implant integration. The effectiveness of implant osseointegration is determined by various factors, including implant design, implant diameter and density, and surgical technique. Osseointegration is dependent on implant design. Aim: To assess the primary stability of tapered and cylindrical implants by using Resonance Frequency Analysis (RFA) and Insertion Torque Values (ITV). Materials and Methods: This in-vivo, prospective clinical study was conducted in the Department of Prosthodontics at Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India in the month of November 2019. Twenty patients were selected for the study. Tapered Bioline implants (Bioline Dental GmbH & Co. KGGermany) were spaced in 10 patients (group 1) and cylindrical Bioline implants (Bioline Dental GmbH & Co. KG-Germany) in the other 10 patients (group 2). For both implant designs, primary stability was assessed immediately after implant pl...
The International Journal of Oral & Maxillofacial Implants, 2013
S imilar success rates have been described in literature reviews both for implants placed immediately following tooth removal and following a period of bone healing. The authors previously demonstrated a 96% implant survival rate over a period of 16 years with a sample size of 1,925 implants. 1 Although the data in that study were assessed for factors that could have influenced implant survival, there was no specific analysis of bone retention when implants were used to support dental prostheses. With increasing use of the immediate implant protocol (IIP), it appears essential to evaluate the long-term stability of bone around implants placed immediately following tooth removal, as this is a criteria for implant success rather than survival. 2-5 The purpose of this retrospective investigation was to evaluate marginal bone level responses to functional loading of implants placed immediately following tooth removal and to correlate these responses to factors that could influence bone retention.
SciDoc publishers, 2021
Background: Implant stability is an indicator of the osseointegration of dental implants, as it affects the healing process and success of osseointegration and it is usually related to the insertion torque during implant placement. As a matter of concern, implants inserted with torques greater than 50 N/cm can cause excessive pressure on the surrounding bone with temporary local bone necrosis. Aim: Comparison the effect between high and low insertion torques on implants stability quotient and marginal bone loss of implants in posterior mandible. Methods: Twenty implants were inserted in 10 patients. Implants were divided into two groups according to high insertion torque (Group A) and low insertion torque (Group B). ISQ was measured by ostell device and the marginal bone loss was measured by CBCT. Results: P.value was much lower than the value 0.05 after six months of implantation in the (Group A) according to the thickness of the vestibular plates (in mm). also, the values of (ISQ) immediately after implantation and after 6 months in the (Group A) were greater than in the (Group B). Conclusion: High insertion torque(above 50 N/cm) leads a higher Implant Stability Quotient(ISQ) immediately after implantation and after 6 months, compared with low IT (25-35 N/cm), and leads to higher buccal bone plate loss after 6 months compared with low IT.
Journal of Oral Implantology, 2014
The purpose of this study was to evaluate the survival rate and the incidence of prosthetic complications of 377 implants with a double octagon connection. Furthermore the correlations among implant dimensions (diameter and length), bone quality and insertion torque were investigated. A four-year multi-center prospective clinical study was designed to evaluate the survival rate of 377 dental implants, inserted on 189 patients between January 2004 and April 2010 with an average follow-up of 46 months. The implant survival rate was 99,7%. The incidence of complication was 0,53%. Moreover insertion torque was statistically related in a significant way to the implant diameter.