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.

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

2019 ◽  
Vol 9 (5) ◽  
pp. 860 ◽  
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.

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

2019 ◽  
Vol 2019 ◽  
pp. 1-4 ◽  
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.

Restorative dentistry 5: dental implants

2020 ◽  
pp. 361-375
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Surgical Techniques ◽  
Gingival Recession ◽  
Missing Teeth ◽  
Implant Placement ◽  
History Of ◽  
Key Aspects ◽  
Supporting Structures

Single or multiple dental implants have become a well-accepted method of replacement of missing teeth and their supporting structures. This chapter introduces implantology, with an explanation of the history of dental implants and a discussion regarding the need to replace missing teeth. The key aspects of treatment planning for implants are outlined including assessment of suitability for implant placement, indications, and contraindications. Available implant types are outlined and the risks of implant placement such as failure to osseointegrate, gingival recession, and nerve damage are considered. Basic surgical techniques for implant placement are described including an explanation of healing and integration times. The chapter includes provision, follow-up, and maintenance advice regarding restoration of the dental implant.

scholarly journals Surface treatment of implants: primary stability

2014 ◽  
Vol 62 (4) ◽  
pp. 357-364
Author(s):  
Nathalia Ferraz OLISCOVICZ ◽  
Ronaldo José da SILVA ◽  
César Penazzo LEPRI ◽  
Élcio MARCANTONIO JUNIOR ◽  
Andréa Cândido dos REIS
Keyword(s):  
Resonance Frequency ◽  
Surface Treatment ◽  
Dental Implants ◽  
Primary Stability ◽  
Titanium Implants ◽  
Artificial Bone ◽  
Wood Substrate ◽  
Significance Level ◽  
Implant Placement ◽  
Osseointegrated Implants

OBJECTIVE: The aim of this study was to analyze the primary stability of dental implants with and without surface treatment, by means of resonance frequency, using different materials as substitutes for human bone substrates for insertion. METHODS: Sixteen external hexagon, cylindrical Conexão(r) titanium implants were used, 11.5 mm long by 3.75 mm wide, as follows: 8 Master Porous (MP), with surface treatment and 8 Master Screw (MS) machined. The implant placement was performed on the following substrates: pork rib bone, wood, artificial bone polyurethane National(r) (40, 20, 15 PCF) and Synbone(r). Primary stability was assessed via resonance frequency using an Osstell Mentor(tm) device. Data were analyzed statistically using ANOVA and Tukey's test, with a significance level of 5%. RESULTS: It was found that although MP and MS have a higher value on all substrates, these were not statistically different between groups (p>0.05), except for polyurethane National(r) 20 PCF. When inserted into the wood substrate and polyurethane National(r) 40 PCF, MP and MS had higher values. MP, when inserted into the pig bone, was also statistically equal to these interactions. CONCLUSION: Despite the continuous development of innovations in the characteristics of implant surfaces to assist with the performance of osseointegrated implants, and the fact that our study has found that the surface treatment had no impact on the primary stability checked using ressonance frequency, there is still very little scientific understanding of these effects.

scholarly journals Does the systemic administration of l-arginine affect dental implant stability in nicotine consumer dogs?

2021 ◽  
Vol 43 (1) ◽  
Author(s):  
Bijan Movahedian ◽  
Mansour Rismanchian ◽  
Hooman Navaei ◽  
Saeid Tavanafar ◽  
Soheil Koushaei
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Primary Stability ◽  
Insertion Torque ◽  
Implant Stability ◽  
Consumer Group ◽  
Value Analysis ◽  
Significant Difference ◽  
Group 2 ◽  
Arginine Supplementation

Abstract Background Nicotine can have detrimental effects on dental implant osseointegration. This study aimed to evaluate the influence of systemic l-arginine supplement on the osseointegration of dental implants in nicotine consumer dogs. Methods Twelve 1-year Labrador Retriever dogs had their right and left third and fourth mandibular premolars removed, and the sockets were left to heal for 6 months. Dogs were randomly divided into three groups (n = 16): group 1—0.2 mg/kg nicotine was injected twice daily; group 2—0.2 mg/kg nicotine was injected twice daily in addition to 200 mg/kg l-arginine capsules taken orally; and group 3—placebo. Forty-eight dental implants were inserted into the healed sockets of the dog’s mandible and were assessed by implant stability quotient (ISQ) using resonance frequency analysis (RFA) during 4 weeks and insertion and removal torque value analysis. Results No implant failure occurred during the study period. The change in torque value between insertion and removal was similar in the placebo and nicotine+arginine consumer dogs (p = 0.276), which shows a positive effect of arginine supplementation in nicotine consumers. There was a significant difference in torque value change between nicotine+arginine vs. nicotine consumers (p = 0.049) and placebo vs. nicotine (p = 0.003). After 4 weeks, the placebo had the most significant improvement in torque value (47.0 ± 16.9), followed by nicotine+arginine (25.1 ± 37.8), and the worst torque value was for the nicotine group (− 5.7 ± 24.0) pound per inch. The results show that except in the first week, there are significant differences in ISQ between the groups in different periods. ISQ in all of the groups has reduced at first but then increased over time. At the time of implant placement, insertion torque was significantly higher in the nicotine consumer group than the nicotine+arginine consumer group and placebo group (p = 0.020). Conclusion Arginine supplementation promotes bone healing and implant primary stability by improving dental implant osseointegration biomechanical characteristics.

A Pig Model for the Histomorphometric Evaluation of Hard Tissue Around Dental Implants

2013 ◽  
Vol 39 (5) ◽  
pp. 551-557 ◽  
Author(s):  
Özgür Erdogan ◽  
Yakup Üstün ◽  
Ufuk Tatli ◽  
Ibrahim Damlar ◽  
Kenan Daglıoglu
Keyword(s):  
Animal Model ◽  
Dental Implants ◽  
Dental Implant ◽  
Bone Microarchitecture ◽  
Frontal Bone ◽  
Bony Tissue ◽  
Domestic Pigs ◽  
Implant Placement ◽  
Suitable Animal Model ◽  
Bone To Implant Contact

This study aimed to evaluate the frontal bone of Swiss Domestic pigs as an animal model for the histologic-histomorphometric examination of bony tissue around dental implants. We inserted SLA surface implants 4.1 mm in diameter and 10 mm in length into the frontal bones of 9 Swiss-Domestic pigs. Histologic and histomorphometric studies were conducted on the undecalcified sections. Histologic examinations showed that the specimens contain a sufficient amount of bone to provide homogenous bone coverage for standard diameter dental implant placement. The mean bone to implant contact was 61.9% ± 8.7%. Other histomorphometric parameters revealed the regular trabecular architecture at this site. Pigs' frontal bone appears to be a suitable animal model in short-term dental implant studies because it provides a sufficient amount of bone and favorable bone microarchitecture.

Evaluation of the accuracy of a novel surgical guide for flapless dental implant placement for immediate loading in edentulous jaws

2021 ◽  
Author(s):  
Giovanni de Almeida Prado Di Giacomo ◽  
Patrícia Cury ◽  
Airton Moreira da Silva ◽  
Jorge Vicente Lopes da Silva ◽  
Carlos Eduardo Pompeo Souto ◽  
...  
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Selective Laser Sintering ◽  
Apical Region ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Implant Placement ◽  
Surgical Guides ◽  
Edentulous Jaws ◽  
Edentulous Jaw

This study was designed to evaluate the accuracy of a novel computer-designed and selectively laser sintered surgical guide for flapless dental implant placement in the edentulous jaw. Fifty dental implants were placed in 11 patients with at least one totally edentulous jaw. Initially, cone-beam computed tomography (CBCT) was performed in each patient to define the virtual position of the dental implants based on the assessment of bone availability and the proposed dental prosthesis. After virtual planning, 3D surgical guides were printed using selective laser sintering. CBCT was repeated after the surgery, and the pre-and postoperative images were overlapped in the CAD software to compare the planned and actual positions of the dental implants using a one-sample t-test. The mean ± angular standard deviation between the long axes of the planned and final dental implant positions was 4.58 ±2.85 degrees; The linear deviation in the coronal position was  0.87 ± 0.49 mm and  in the apical region of the dental implants was 1.37 ± 0.69 mm. These differences were statistically significant (p &lt;0.001). The proposed modifications reduced the deviations, resulting in an improvement in the technique. We were able to place implants and temporary prostheses using the present protocol, taking into account the differences between the planned and final positions of the dental implants.

A Numerical Approach of Estimating Dental Implant Healing Process Using Resonance Frequency Analysis (RFA)

2011 ◽  
Author(s):  
Reza Harirforoush ◽  
Siamak Arzanpour
Keyword(s):  
Resonance Frequency ◽  
Dental Implant ◽  
Frequency Analysis ◽  
Healing Process ◽  
Primary Stability ◽  
High Sensitivity ◽  
Titanium Implant ◽  
Resonance Frequency Analysis ◽  
Early Assessment ◽  
Bone Interface

This paper investigates primary stability of dental implant that indicates the process of bone-implant integration. This integration is known to happen at the boundary of the bone and dental implant contact surface. The resonance frequency of dental implant is used as the parameter for this investigation due to its high sensitivity to boundary condition variations. In this study, resonance frequency analysis (RFA) of the jaw-implant structure is carried out using finite element modeling. The FEM analyses are conducted in ANSYS modal analysis simulation environment. The FEM model of the structure includes titanium implant, Cancellous and cortical bone. Different implant-bone interface conditions are studied for this investigation. Various boundary conditions were studied to identify natural frequencies of jaw-implant structure. Our analysis shows that the resonance frequency of the implant increases during the healing period and reaches a plateau when the implant-bone interface was fully integrated. The results show that RFA could be suggested as a non-invasive, reliable and accurate diagnostic method for early assessment of the healing stages.

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.

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