scholarly journals Infrared Thermographic Evaluation of Temperature Modifications Induced during Implant Site Preparation with Steel vs. Zirconia Implant Drill

2020 ◽  
Vol 9 (1) ◽  
pp. 148 ◽  
Author(s):  
Antonio Scarano ◽  
Felice Lorusso ◽  
Sammy Noumbissi
Keyword(s):  
Study Groups ◽  
Apical Portion ◽  
Temperature Changes ◽  
Implant Placement ◽  
In Vitro Investigation ◽  
Significant Difference ◽  
Implant Site Preparation ◽  
Drilling Time ◽  
Zirconia Implant

Background: The heat produced during implant site osteotomy can potentially interfere with and influence the osseointegration process of a dental implant. The objective of this in vitro investigation was to measure the temperature changes during simulated osteotomies in bovine rib bone. The measurements were made at the apical area of the osteotomies with steel implant drills compared to zirconia implant drills. Methods: Steel cylindrical drills (2 mm) and zirconia cylindrical drills (2 mm) were evaluated in vitro using bovine rib bone for a total of five groups based on the number of osteotomies performed with each drill: 10, 20, 40, 90, or 120 osteotomies. Bone and apical drill temperatures were measured by means of infrared thermography. The drilling time for each osteotomy was measured for each preparation. Results: Statistically significant differences were found in the temperature measurements in the bone and apical portion of the drills between the study groups (p < 0.05). A statistically significant difference was observed for drilling time preparation between steel cylindrical drill (2 mm) and zirconia cylindrical drills (2 mm) (p < 0.01). Conclusions: The drill material has an impact on the temperature changes that occur at its apical portion during bone preparation for implant placement.

Temperature Changes in Cortical Bone after Implant Site Preparation Using a Single Bur versus Multiple Drilling Steps: An In Vitro Investigation

2013 ◽  
Vol 17 (4) ◽  
pp. 700-707 ◽  
Author(s):  
Sergio Alexandre Gehrke ◽  
Raphaél Bettach ◽  
Silvio Taschieri ◽  
Gilles Boukhris ◽  
Stefano Corbella ◽  
...  
Keyword(s):  
Cortical Bone ◽  
Site Preparation ◽  
Temperature Changes ◽  
In Vitro Investigation ◽  
Implant Site Preparation

In Vitro Comparison of Time and Accuracy of Implant Placement Using Trephine and Conventional Drilling Techniques Under Dynamic Navigation

2020 ◽  
Author(s):  
Janina Golob Deeb ◽  
Anja Frantar ◽  
George R. Deeb ◽  
Caroline K. Carrico ◽  
Ksenija Rener-Sitar
Keyword(s):  
In Vitro Study ◽  
Site Preparation ◽  
Experimental Conditions ◽  
Implant Placement ◽  
Significant Difference ◽  
Dynamic Navigation ◽  
Drilling Technique ◽  
Implant Site Preparation ◽  
Conventional Drilling

The aim of this randomized in vitro study was to compare the time and accuracy of implant site preparation and implant placement using a trephine drill versus a conventional drilling technique under dynamic navigation. A total of 42 implants were placed in simulation jaw models with the two drilling techniques by two operators with previous experience with dynamic navigation. The timing of each implant placement was recorded, and horizontal, vertical, and angulation discrepancies between the planned and placed implants were compared. There was no significant difference in time or accuracy between the trephine and conventional drilling techniques. Implant site preparation with a single trephine drill using dynamic navigation was as accurate under in vitro experimental conditions as a conventional drilling sequence.

scholarly journals Observational Study on the Preparation of the Implant Site with Piezosurgery vs. Drill: Comparison between the Two Methods in terms of Postoperative Pain, Surgical Times, and Operational Advantages

2019 ◽  
Vol 2019 ◽  
pp. 1-6 ◽  
Author(s):  
Michele Maglione ◽  
Lorenzo Bevilacqua ◽  
Federica Dotto ◽  
Fulvia Costantinides ◽  
Felice Lorusso ◽  
...  
Keyword(s):  
Postoperative Pain ◽  
Operative Time ◽  
Oral Surgery ◽  
Study Groups ◽  
Site Preparation ◽  
Medical Sciences ◽  
Operative Duration ◽  
Significant Difference ◽  
Surgery Department ◽  
Implant Site Preparation

Purpose. Recent advances show that ultrasonic implant site osteotomy is related to a decreased trauma and a better postoperative healing of the surgical site when compared to traditional drilling techniques. The micrometric bone cutting control and the operative advantages related to the piezoelectric approach are also characterized by a learning curve for the clinician in surgical practice and an increased operative duration of the procedure. The aim of this investigation is to compare the operative time, the postoperative pain, and the amount of painkillers taken by the patient during the healing period. Methods. A total of 65 patients were treated at the Unit of Oral Surgery (Department of Medical Sciences, Surgery and Health, University of Trieste, Italy) using a split mouth model: 75 drill-inserted implants (G1) and 75 piezoelectric device-inserted implants (G2) were placed. The Visual Analogue Scale (VAS) was performed to evaluate the postoperative pain at 15 days from surgery. The operative time and frequency of intake of painkillers were measured. Results. The G1 and G2 groups showed a significant difference with a higher use of painkillers observed for G1. The G2 patients showed a lower level of pain (VAS) at all experimental times between 8 hours to 7 days (p<0.01) postsurgery. At 15 days, the pain levels were similar for both groups. No differences were found in site preparation duration between the study groups. Conclusions. The evidence supports the application of the piezoelectric approach compared to the drill’s osteotomy as a useful technique for implant site preparation. This trial is registered with NCT03978923.

Influence of Different Restoration Techniques on Fracture Resistance of Root-filled Teeth: In Vitro Investigation

2018 ◽  
Vol 43 (2) ◽  
pp. 162-169 ◽  
Author(s):  
ME Hshad ◽  
EE Dalkılıç ◽  
GC Ozturk ◽  
I Dogruer ◽  
F Koray
Keyword(s):  
Fracture Strength ◽  
Resin Composite ◽  
Testing Machine ◽  
Compressive Force ◽  
Control Group ◽  
Hybrid Resin ◽  
Flowable Composite ◽  
In Vitro Investigation ◽  
Significant Difference

SUMMARY Objective: The purpose of this study was to determine the fracture strength of endodontically treated mandibular premolar teeth restored with composites and different reinforcement techniques. Methods and Materials: Forty-eight freshly extracted human mandibular premolar teeth were randomly divided into four groups: group IN, group CR, group FRC, and group PRF. Group IN consisted of teeth with intact crowns and served as the control group. In the other three groups, endodontic treatment was performed and standard mesio-occluso-distal (MOD) cavities were prepared. Then cavities were restored with hybrid resin composite only, flowable composite and hybrid resin composite, and Ribbond, flowable composite and hybrid resin composite in groups CR, FRC and PRF, respectively. All of the teeth were subjected to fracture by means of a universal testing machine, and compressive force was applied with a modified stainless-steel ball at a crosshead speed at 0.5 mm/min. Results: The highest values were observed in group IN, while the lowest values were determined in group CR. There was not any statistically significant difference between group CR and group FCR (p&gt;0.05). When groups CR, FCR, and PRF were compared, group PRF showed significantly better fracture strength than did groups CR and FCR (p&lt;0.05). It was determined that there was not any significant difference between group IN and group PRF (p&gt;0.05). Conclusions: Polyethylene ribbon fiber considerably increases the fracture strength of mandibular premolar teeth with MOD cavities restored with composite.

scholarly journals Effects of Different Disinfection Methods on Microleakage of Giomer Restorations

2019 ◽  
Vol 13 (04) ◽  
pp. 569-573 ◽  
Author(s):  
Abidin Talha Mutluay ◽  
Merve Mutluay
Keyword(s):  
In Vitro Study ◽  
Study Groups ◽  
Class V ◽  
Disinfection Methods ◽  
Group 4 ◽  
Significant Difference ◽  
Group 3 ◽  
Group 2 ◽  
Method Group

Abstract Objectives The purpose of this in vitro study was to investigate the effects of different disinfection methods on microleakage of Class V Giomer restorations. Materials and Methods Class V cavity preparation was performed on 40 sound permanent central incisors. Class V cavities (3 x 2 x 2 mm) were prepared on the buccal surfaces of the selected teeth. The teeth were randomly divided into four groups, each to be disinfected with a different method: Group 1—Disinfection with 2% chlorhexidine, Group 2—Disinfection with 6% sodium hypochlorite, Group 3—Disinfection with erbium, chromium: yttrium-scandium-gallium-garnet laser, Group 4—Control (distilled water). BeautiBond adhesive and Beautifil II Giomer restoration materials were applied to all surfaces of the cavities after the disinfection of all groups. The teeth were thermocycled 5,000 times (5–55°C), and then were immersed in 0.5% methylene blue for 24 hours. After rinsing, the teeth were longitudinally sectioned and dye penetration was assessed under a stereomicroscope (40x) to evaluate microleakage. Statistical Analysis The results were statistically evaluated by using the Kruskal–Wallis and Mann–Whitney U tests. Results Statistically, no significant difference was found between all four groups (p > 0.05). There was no statistically significant difference in microleakage scores of study groups (p > 0.05). Also, the microleakage scores of the gingival margins were significantly higher than the incisal margins (p < 0.0001). Conclusions Application of the different cavity disinfectants has no effect on the microleakage of Class V Giomer restorations.

An in vitro study of temperature changes in type 4 bone during implant placement: bone condensing versus bone drilling

2011 ◽  
Vol 112 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Tijana Misic ◽  
Aleksa Markovic ◽  
Aleksandar Todorovic ◽  
Snjezana Colic ◽  
Scepanovic Miodrag ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Bone Drilling ◽  
Temperature Changes ◽  
Implant Placement ◽  
Bone Condensing

Tightening of healing abutments: influence of torque on bacterial proliferation risk, an in vitro investigation

2014 ◽  
Vol 59 (6) ◽  
Author(s):  
Philippe Bousquet ◽  
Isabelle Calas Bennasar ◽  
Paul Tramini ◽  
Maxime Jacquemot ◽  
Frédéric Cuisinier
Keyword(s):  
Surgical Procedure ◽  
Gas Flow ◽  
Nitrogen Gas ◽  
Bacterial Proliferation ◽  
In Vitro Investigation ◽  
Significant Difference ◽  
Total Lack

AbstractGap at the implant-healing abutment junction can increase the risk of bacterial proliferation. In this study, we determined the leakage at the microgap, and we evaluated hand screwing among clinicians.The torques tested with nitrogen gas flow were 10, 15, 20, and 30 N cm, and 54 clinicians were asked to torque down a healing abutment as for a surgical procedure.There were no significant differences between 10 and 15 N cm, with a total lack of tightness. For 20 and 30 N cm, there was a notable decrease in leakage. The torque achieved by hand was <10 N cm for 61.7% of the clinicians, between 10 and 15 N cm for 29.1%, between 15 and 20 N cm for 8.0%, and between 20 and 25 N cm for 1.2%.There was a significant difference related to the strength of tightening. Under the conditions of our experiment, the gap of connection was reduced with a torque of ≥20 N cm. Only a small portion of the clinicians could obtain these values by hand. Therefore, a dynamometrical manual wrench should be used to minimize the gap during the osseointegration period.

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