scholarly journals Histologic and histomorphometric evaluation of new zirconia-based ceramic dental implants: A preclinical study in dogs

Author(s):  
Doriane Chacun ◽  
Arnaud Lafon ◽  
Nicolas Courtois ◽  
Helen Reveron ◽  
Jérôme Chevalier ◽  
...  
2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Sergio Alexandre Gehrke ◽  
Raphaél Bettach ◽  
Jaime Sardá Aramburú Júnior ◽  
Juan Carlos Prados-Frutos ◽  
Massimo Del Fabbro ◽  
...  

Objectives. The present study aims to compare the drilling protocol effect on osseointegration event in three commercially available titanium dental implants with different drill protocol using a rabbit tibia model. Materials and Methods. Three different drilling sequences were compared as follows: drilling sequence using a single unique drill of 4.2 mm conical implant (Group 1), drilling sequence using 3 consecutive cylindrical drills for a 4.1 mm cylindrical implant (Group 2), and drilling sequence using 3 consecutive conical drills for a 4.3 mm conical implant (Group 3). For each group, 18 drilling procedures and implant placements were performed, totalizing 54 commercially available titanium dental implants. The samples were removed 6 weeks after implantation. Resonance frequency analyses (RFA) were performed immediately after the implantation, and at 6 weeks removal torque test (RTt) and histological analysis were performed. Results. The RFA measured showed statistical difference between the groups in time 1 and no significant statistical differences in time 2 (p>0.05). In the RTt no significant difference was found between the 3 groups tested. Histomorphometric analysis showed no significant difference between groups in the bone-to-implant contact% (p>0.05). Conclusion. In the present preclinical study, osteotomy using a single bur did not show differences regarding the proposed and evaluated tests parameters for assessing the peri-implant behavior.


1990 ◽  
Vol 54 (11) ◽  
pp. 688-689 ◽  
Author(s):  
J Jacobson ◽  
B Maxson ◽  
K Mays ◽  
J Peebles ◽  
C Kowalski

1998 ◽  
Vol 27 (6) ◽  
pp. 329-333 ◽  
Author(s):  
M G P Cavalcanti ◽  
J Yang ◽  
A Ruprecht ◽  
M W Vannier

Author(s):  
Mana Alqahtani

The aim was to assess the influence of moderate cigarette-smoking on the clinical (bleeding on probing [BoP] and probing depth [PD]) and radiographic (crestal bone resorption [CBR]) around cement- and screw-retained dental implants at 5 years’ follow-up. A questionnaire was used to collect information about age, gender, smoking history, duration of implants in function, jaw location of the implant, and daily toothbrushing and flossing. Peri-implant BoP, PD and CBR were measured in all groups. Group comparisons were performed using one-way analysis of variance and for multiple comparisons, the Bonferroni Post hoc adjustment test was performed. Level of significance was set at P<0.05. Forty-eight patients (25 smokers and 23 non-smokers) had cement-retained dental implants; and 48 (24 smokers and 24 non-smokers) had screw-retained dental implants. Among patients with cement and screw-retained dental implants, PD (P<0.05) and CBR (P<0.05) were significantly higher among smokers than non-smokers. The peri-implant sites that demonstrated BoP were statistically significantly higher among non-smokers (P<0.05) than smokers among patients with cement- and screw-retained dental implants. There was no statistically significant difference in peri-implant PD and CBR among smokers with cement- and screw-retained dental implants. Among non-smokers with cement and screw-retained dental implants, there was no statistically significant difference in BoP, PD and CBR. Cigarette-smoking is associated with an increased PD and CBR around cement- and screw-retained dental implants. Cigarette-smoking increases peri-implant soft tissue inflammation as well as loss of crestal bone and this relationship is independent of the type of implant retention protocol used.The author recommends that cement- and screw-retained dental implants are suitable for prosthesis restoration in non-smokers. Further studies on dual-smokers (individuals smoking cigarettes and other forms of tobacco products) are needed related to the clinicoradiographic inflammatory parameters around cement- and screw-retained dental implants


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