A Prospective Randomized Clinical Trial on Radiographic Crestal Bone Loss Around Dental Implants Placed Using Two Different Drilling Protocols: 12-Month Follow-up

2021 ◽  
Vol 36 (6) ◽  
pp. e175-e182
Author(s):  
Afsheen Tabassum ◽  
Farhat Kazmi ◽  
Daniel Wismeijer ◽  
Intisar Siddiqui ◽  
Ali Tahmaseb
Keyword(s):  
Clinical Trial ◽  
Bone Loss ◽  
Randomized Clinical Trial ◽  
Dental Implants ◽  
Prospective Randomized Clinical Trial ◽  
Crestal Bone Loss

scholarly journals Influence of Biologically Oriented Preparation Technique on Peri-Implant Tissues; Prospective Randomized Clinical Trial with Three-Year Follow-Up. Part I: Hard Tissues

2019 ◽  
Vol 8 (12) ◽  
pp. 2183 ◽  
Author(s):  
Rubén Agustín-Panadero ◽  
Naia Bustamante-Hernández ◽  
María Fernanda Solá-Ruíz ◽  
Álvaro Zubizarreta-Macho ◽  
Antonio Fons-Font ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Bone Loss ◽  
Randomized Clinical Trial ◽  
Preparation Technique ◽  
Crown Group ◽  
Clinical Behavior ◽  
Prospective Randomized Clinical Trial ◽  
Hard Tissues ◽  
Functional Loading

Purpose: The objective of this prospective randomized clinical trial (RCT) was to analyze and compare the clinical behavior of three types of prosthesis supported by single implants in the posterior region after three years functional loading. Materials and Methods: Seventy-five implants were divided into three groups according to the type of prosthetic restoration: screw-retained crown (Group GS); cemented crown without finishing line (biologically oriented preparation technique) (Group GBOPT); and conventional cemented crown with finishing line (Group GCC). The clinical behavior of each restoration type was analyzed after 3 years functional loading by analyzing radiographic peri-implant bone loss. Results: GBOPT obtained the least bone loss (p < 0.01) in comparison with GS and GCC. Conclusions: Bone loss around implants is related to the type of prosthetic restoration it supports, whereby cemented BOPT crowns present less bone loss.

scholarly journals The MELFO-Study: Prospective, Randomized, Clinical Trial for the Evaluation of a Stage-adjusted Reduced Follow-up Schedule in Cutaneous Melanoma Patients—Results after 1 Year

2016 ◽  
Vol 23 (9) ◽  
pp. 2762-2771 ◽  
Author(s):  
Samantha Damude ◽  
Josette E. H. M. Hoekstra-Weebers ◽  
Anne Brecht Francken ◽  
Sylvia ter Meulen ◽  
Esther Bastiaannet ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Cutaneous Melanoma ◽  
Prospective Randomized Clinical Trial ◽  
Melanoma Patients

scholarly journals Influence of Biologically Oriented Preparation Technique on Peri-Implant Tissues; Prospective Randomized Clinical Trial with Three-Year Follow-Up. Part II: Soft Tissues

2019 ◽  
Vol 8 (12) ◽  
pp. 2223 ◽  
Author(s):  
Rubén Agustín-Panadero ◽  
Naia Bustamante-Hernández ◽  
Carlos Labaig-Rueda ◽  
Antonio Fons-Font ◽  
Lucía Fernández-Estevan ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Soft Tissue ◽  
Bone Loss ◽  
Randomized Clinical Trial ◽  
Soft Tissues ◽  
Clinical Parameters ◽  
Preparation Technique ◽  
Bleeding On Probing ◽  
Prospective Randomized Clinical Trial ◽  
Keratinized Mucosa

Purpose: The objective of this prospective randomized clinical trial (RCT) was to analyze and compare the clinical behavior of three types of prosthesis supported by single implants in the posterior region after three years of functional loading. Materials and methods: Seventy-five implants were divided into three groups according to the type of prosthetic restoration: screw-retained crown (group GS); cemented crown without finishing line (biologically oriented preparation technique) (group GBOPT); and conventional cemented crown with finishing line (group GCC). After three years in function, clinical parameters (presence of keratinized mucosa, probing depths, bleeding on probing, and radiographic bone loss) were compared between the three experimental groups. The possible correlation between soft tissue clinical parameters and bone loss was also analyzed. Results: Statistical analysis found significant differences in clinical parameters between the different types of crown, with the cemented restoration without finishing line (BOPT) presenting fewer complications and better peri-implant health outcomes including: significantly different KMW data (mm), with significant differences between groups GBOPT and GCC (p < 0.001, Kruskal–Wallis test), with GBOPT obtaining larger quantities of keratinized mucosa (KM); statistically significant differences in probing depth (PD) values between groups GBOPT and GCC (p = 0.010, Kruskal–Wallis test); significant differences in bleeding on probing (BOP) between groups GBOPT and GCC (p = 0.018, Chi2 test) in favor of GBOPT. Conclusions: Soft tissue behavior around implants is related to the type of prosthetic restoration used, with cemented prostheses with BOPT presenting better peri-implant soft tissue behavior.

Hyaluronidase Versus Surgical Excision of Ganglia: A Prospective, Randomized Clinical Trial

2002 ◽  
Vol 27 (3) ◽  
pp. 256-258 ◽  
Author(s):  
M. JAGERS OP AKKERHUIS ◽  
M. VAN DER HEIJDEN ◽  
P. R. G. BRINK
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Recurrence Rate ◽  
Surgical Excision ◽  
Prospective Randomized Clinical Trial ◽  
Surgical Group

This prospective, randomized clinical trial compared the treatment of ganglia by either hyaluronidase injection and aspiration or surgical excision. Fifty patients were randomly allocated to each group and 46 patients in the hyaluronidase group and 43 in the surgical group were available for follow-up at 1 year. Patients with ganglia treated with hyaluronidase had a recurrence rate of 77%, which was significantly higher ( P<0.01) than the recurrence rate after surgery (24%).

scholarly journals Implant-prosthetic rehabilitation of patients with severe horizontal bone deficit on mini-implants with two-piece design—retrospective analysis after a mean follow-up of 5 years

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Lukas Wimmer ◽  
Pantelis Petrakakis ◽  
Karim El-Mahdy ◽  
Surian Herrmann ◽  
Dirk Nolte
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
Treatment Option ◽  
Negative Impact ◽  
Height Loss ◽  
High Survival ◽  
Alveolar Crest ◽  
Crestal Bone Loss ◽  
Alternative Treatment Option

Abstract Background As a consequence of tooth loss due to trauma or extraction, a reduced alveolar crest volume limits the deployment of standard implants in certain patient cases. For this reason, minimal-invasive treatment with mini-dental implants (MDI) might be an option to allow implant treatment even in cases with severe horizontal bone loss without augmentation measures. The aim of this retrospective cohort study was to investigate clinical and radiological implant, as well as patient-related parameters after treatment with MDI. Results Clinical and radiological records of 19 female (82.6%) and 4 male patients (17.4%) (N = 23), who received 52 mini-dental implants with a two-piece design in a single surgical center between November 2011 and October 2018, were retrospectively analyzed. Implants were submitted to conventional loading on different types of screwed superstructures. Crestal bone loss was measured on standardized periapical radiographs. Patient-related outcome parameters (PROMs) were recorded during follow-up period. Mean clinical and radiological follow-up was 69.6 months (5.8 years) and 51.6 months (4.3 years), respectively. Three implants were lost in two patients, leading to an implant survival rate of 94.2%. Mean radiological crestal bone loss was 1.6 mm. Both amount of peri-implant recession and crestal bone loss were significantly correlated (r = 0.65; p < 0.001). Likewise, a significant correlation was observed between deeper probing depths and increased peri-implant bone loss (r = 0.41; p = 0.012). Alveolar ridges with a reduced alveolar crest width were significantly correlated with higher peri-implant bone loss as well (r = − 0.33; p = 0.011). No prosthetic complications were reported during follow-up. Extent of midfacial recession and papilla height loss had a significant negative impact on most of the PROMs. Conclusions Treatment with MDI seems to be a successful alternative treatment option, especially for elderly patients with reduced crest width at implant sites. Due to the good clinical results and high survival and success rates, this treatment option was associated with high patient satisfaction. Despite the promising results, particular consideration should be given to appropriate treatment planning in these patients due to the strong correlation between peri-implant soft-tissue parameters, crestal bone loss, and reduced alveolar crest width.

scholarly journals Marginal Bone Remodeling around healing Abutment vs Final Abutment Placement at Second Stage Implant Surgery: A 12-month Randomized Clinical Trial

2016 ◽  
Vol 17 (1) ◽  
pp. 7-15 ◽  
Author(s):  
Ronald Younes ◽  
Antoine Berberi ◽  
Nabih Nader ◽  
Maissa Aboulhosn ◽  
Cordahi Manal
Keyword(s):  
Clinical Trial ◽  
Bone Loss ◽  
Randomized Clinical Trial ◽  
Bone Remodeling ◽  
Test Group ◽  
Control Group ◽  
Marginal Bone Loss ◽  
Second Stage ◽  
Stable Connection

ABSTRACT Background The periimplant bone level has been used as one of the criteria to assess the success of dental implants. It has been documented that the bone supporting two-piece implants undergoes resorption first following the second-stage surgery and later on further to abutment connection and delivery of the final prosthesis. Objective The aim of this multicentric randomized clinical trial was to evaluate the crestal bone resorption around internal connection dental implants using a new surgical protocol that aims to respect the biological distance, relying on the benefit of a friction fit connection abutment (test group) compared with implants receiving conventional healing abutments at secondstage surgery (control group). Materials and methods A total of partially edentulous patients were consecutively treated at two private clinics, with two adjacent two-stage implants. Three months after the first surgery, one of the implants was randomly allocated to the control group and was uncovered using a healing abutment, while the other implant received a standard final abutment and was seated and tightened to 30 Ncm. At each step of the prosthetic try-in, the abutment in the test group was removed and then retightened to 30 Ncm. Horizontal bone changes were assessed using periapical radiographs immediately after implant placement and at 3 (second-stage surgery), 6, 9 and 12 months follow-up examinations. Results At 12 months follow-up, no implant failure was reported in both groups. In the control group, the mean periimplant bone resorption was 0.249 ± 0.362 at M3, 0.773 ± 0.413 at M6, 0.904 ± 0.36 at M9 and 1.047 ± 0.395 at M12. The test group revealed a statistically significant lower marginal bone loss of 20.88% at M3 (0.197 ± 0.262), 22.25% at M6 (0.601 ± 0.386), 24.23% at M9 (0.685 ± 0.341) and 19.2% at M9 (0.846 ± 0.454). The results revealed that bone loss increased over time, with the greatest change in bone loss occurring between 3 and 6 months. Alveolar bone loss was significantly greater in the control condition than the test condition. Conclusion The results of this prospective study demonstrated the benefit of placing a prosthetic component with a stable connection at second-stage surgery, in terms of reduced marginal bone remodeling when compared with conventional procedure. Clinical significance. The use of a stable connection in a healing component during try-in stages prior to final restoration placement leads to less periimplant marginal bone loss. How to cite this article Nader N, Aboulhosn M, Berberi A, Manal C, Younes R. Marginal Bone Remodeling around healing Abutment vs Final Abutment Placement at Second Stage Surgery: A 12-month Randomized Clinical Trial. J Contemp Dent Pract 2016;17(1):7-15.

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