Effect of the Configurations of Fiducial Markers on the Accuracy of Surgical Navigation in Zygomatic Implant Placement: An In Vitro Study

2019 ◽  
Vol 34 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Shengchi Fan ◽  
Kuofeng Hung ◽  
Michael Bornstein ◽  
Wei Huang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Surgical Navigation ◽  
In Vitro Study ◽  
Vitro Study ◽  
Fiducial Markers ◽  
Implant Placement ◽  
Zygomatic Implant

scholarly journals Dynamic Navigation in Dental Implantology: The Influence of Surgical Experience on Implant Placement Accuracy and Operating Time. An in Vitro Study

2020 ◽  
Vol 17 (6) ◽  
pp. 2153
Author(s):  
Gerardo Pellegrino ◽  
Pierantonio Bellini ◽  
Pier Francesco Cavallini ◽  
Agnese Ferri ◽  
Andrea Zacchino ◽  
...  
Keyword(s):  
Operating Time ◽  
In Vitro Study ◽  
Vitro Study ◽  
Surgical Experience ◽  
Reliable Technique ◽  
Implant Positioning ◽  
Implant Placement ◽  
Dynamic Navigation ◽  
Placement Accuracy

Aim: the aim of this in vitro study was to test whether the implant placement accuracy and the operating time can be influenced by the operator’s experience. Materials and methods: sixteen models underwent a (Cone Beam Computer Tomography) CBCT and implant positioning was digitally planned on this. The models were randomly assigned to four operators with different levels of surgical experience. One hundred and twelve implant sites were drilled using a dynamic navigation system and operating times were measured. Based on postoperative CBCTs, dental implants were virtually inserted and superimposed over the planned ones. Two-dimensional and 3D deviations between planned and virtually inserted implants were measured at the entry point and at the apical point. Angular and vertical errors were also calculated. Results: considering coronal and apical 3D deviations, no statistically significant differences were found between the four operators (p = 0.27; p = 0.06). Some vectorial components of the deviation at the apical point and the angular errors of some operators differed from each other. Conclusions: within the limitations of this study, dynamic navigation can be considered a reliable technique both for experienced and novice clinicians.

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

scholarly journals The Effect of Undersized Drilling on the Coronal Surface Roughness of Microthreaded Implants: An In Vitro Study

2020 ◽  
Vol 10 (15) ◽  
pp. 5231 ◽  
Author(s):  
Omer Cohen ◽  
Ofer Moses ◽  
Talia Gurevich ◽  
Roni Kolerman ◽  
Alina Becker ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Temperature ◽  
In Vitro Study ◽  
Vitro Study ◽  
Control Group ◽  
Insertion Torque ◽  
Implant Surface ◽  
Implant Placement ◽  
Constant Rate

This in-vitro study assessed the effect of an underdrilling implant placement protocol on the insertion torque, implant surface temperature and surface roughness (Sa) topography of the cervical microthreads of implants. Three groups of 25 implants (3.75 mm × 10 mm) were placed in osteotomies prepared in an artificial bone disc with final diameters of 3.65 mm according to the manufacturer’s instructions and in osteotomies prepared in accordance with an underdrilling protocol with final drill diameters of 3.2 and 2.8 mm (groups D3.65, D3.2, D2.8, respectively). Implants were inserted at a constant rate of 30 rpm. The surface temperature of the implants was measured with a thermal camera and temperature amplitude (Temp-Amp) was calculated by subtracting the room temperature from the measured implant surface temperature. Upon implant retrieval, coronal surface topography was assessed using a Nanofocus µsurf explorer and compared to a set of 25 new implants (control group). The differences between groups were compared using one-way ANOVA (p < 0.05). Significantly higher insertion torque, surface temperature values and significantly smaller average Sa values were measured in the implants inserted in undersized preparations. The highest temperature, insertion torque and Temp-Amp values and the largest decrease in Sa were measured in the D2.8 group. The lowest values were measured in the D3.65 group.

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