The effects of diabetes mellitus on peri-implant marginal bone loss in the posterior maxilla

2019 ◽  
Vol 26 (10) ◽  
pp. 2224
Author(s):  
Mustafa Uslu ◽  
Mustafa Karaca ◽  
Arife Sabanci
Author(s):  
Daycelí Estévez-Pérez ◽  
Naia Bustamante-Hernández ◽  
Carlos Labaig-Rueda ◽  
María Fernanda Solá-Ruíz ◽  
José Amengual-Lorenzo ◽  
...  

Objective: To evaluate the influence of implant length on marginal bone loss, comparing implants of 4 mm, 6 mm, and >8 mm, supporting two splinted crowns after 36-month functional loading. Materials and Methods: this retrospective clinical trial evaluated the peri-implant behavior of splinted crowns (two per case) on pairs of implants of the same length placed in the posterior maxilla (molar area). Implants were divided into three groups according to length (Group 1: extra-short 4 mm; Group 2: short 6 mm; Group 3: conventional length >8 mm). Marginal bone loss was analyzed using standardized periapical radiographs at the time of loading and 36 months later. Results: 24 patients (19 women and 5 men) were divided into three groups, eight rehabilitations per group, in the position of the maxillary first and second molars. The 48 Straumann® Standard Plus (Regular Neck (RN)/Wide Neck (WN)) implants were examined after 36 months of functional loading. Statistical analysis found no significant differences in bone loss between the three groups (p = 0.421). No implant suffered biological complications or implant loss. Long implants were associated with less radiographic bone loss. Conclusions: extra-short (4 mm); short (6 mm); and conventional length (>8 mm) implants in the posterior maxilla present similar peri-implant bone loss and 100% survival rates in rehabilitation, by means of two splinted crowns after 36 months of functional loading. Implants placed in posterior positions present better bone loss results than implants placed in anterior positions, regardless of the interproximal area where bone loss is measured. Conventional length (>8 mm) implants show better behavior in terms of distal bone loss than short (6 mm) and extra-short (4 mm) implants.


2020 ◽  
Author(s):  
Shaojie Shi ◽  
Feng Ding ◽  
Xiangdong Liu ◽  
Lei Wang ◽  
Xingxing Wang ◽  
...  

Abstract Background: The clinical and radiographic variables around dental implants in type 2 diabetes mellitus patients with different hypoglycemic agents still remained unclear.Methods: This retrospective cohort study collected the dental records and digital periapical radiographs of type 2 diabetes mellitus patients and implants. These patients were grouped according to their medication: insulin, metformin, and glucagon-like peptide-1 drugs. The radiographic marginal bone loss around implants and clinical parameters, including peri-implant bleeding on probing and probing depth, were compared among groups using the Kruskal-Wallis test.Results: A total of 150 patients with 308 implants (101 in insulin group, 121 in metformin group and 86 in glucagon-like peptide-1 drugs group) were assessed. The peri-implants marginal bone loss in insulin group (P<0.05) and metformin group (P<0.01) were significantly higher than glucagon-like peptide-1 drug group. The radiographic bone loss in metformin was higher than insulin group (P<0.05). While there was no statistical difference of clinical peri-implant parameters among groups(P>0.05).Conclusions: The radiographic variables were not exactly the same among type 2 diabetes mellitus patients with different hypoglycemic agents. glucagon-like peptide-1 drugs might be more beneficial to bone tissue around implants. More studies are needed to verify the direct effect of these drugs on peri-implant bone.Clinical trial registration number: ChiCTR2000034211 (retrospectively registered)


2018 ◽  
Vol 44 (2) ◽  
pp. 87-93 ◽  
Author(s):  
Paolo Toti ◽  
Simone Marconcini ◽  
Giammarinaro Enrica ◽  
Giorgio Pedretti ◽  
Antonio Barone ◽  
...  

Our purpose was to evaluate the occurrence of complications and the degree of bone loss in a cohort of patients treated with fixed prostheses supported by immediately loaded dental implants. The primary aim was to compare partial versus full-arch fixed dental prostheses. We then tested the effect of sinus lifting. In the present retrospective cohort study, the patients had their implants restored with fixed dental prostheses supported by dental implants positioned in the posterior maxilla and mandible. When necessary, the maxillary sinuses were grafted with particulate autogenous bone. Patients were then ranked according to the following predictors: length of prosthesis, crown-to-implant ratio, number of crowns to number of implants ratio, and presence of sinus lifting. Outcomes were evaluated for up to 2 years regarding the peri-implant marginal bone loss and implant/prosthesis survival rates. Fifty-eight subjects (209 implants) were rehabilitated with 25 fixed full-arch prostheses and 33 partial fixed dental implant bridges (16 supported by implants placed in grafted sinus). The mean marginal bone loss for implants supporting partial fixed dental prostheses amounted to 0.81 mm, whereas that for implants within the group of full-arch fixed dental prostheses was 1.21 mm; the comparison of the levels in the 2 groups showed a significant difference (P = .0055). A statistically significant difference (P = .0006) was found between the bone loss around maxillary implants (1.53 mm) and the bone loss around mandibular implants (1.10 mm). Two implants and 4 prostheses failed; 2-year survival rates of partial and of full-arch fixed dental prostheses, respectively, were 94.1% and 96%. Bone loss in full-arch prostheses appeared to be higher than in that of partial prosthesis. Implant-supported prostheses in the maxillae exhibited a bone loss higher than that registered in mandibles.


2021 ◽  
Vol 10 (7) ◽  
pp. 1360
Author(s):  
Won-Bae Park ◽  
Ji-Young Han ◽  
Kyung Lhi Kang

Maxillary sinus floor augmentation (MSFA) is widely used and considered a predictable procedure for implant placement. However, the influence of MSFA on implant survival and marginal bone loss (MBL) is still inconclusive. The purpose of this retrospective observational study is to evaluate the long-term genuine influence of MSFA on the survival and MBL of implants by comparing those with and without MSFA only in maxillary molars within the same patients. Thirty-eight patients (28 male and 10 female), with a total of 119 implants, received implants with and without MSFA, and were followed up for 5.8 to 22 years. Patient- and implant-related factors were assessed with a frailty model for implant survival and with generalized estimation equations (GEE) for MBL around the implant. No variables showed a statistical significance for implant failure in the frailty model. In GEE analysis for MBL, MSFA did not show any statistical significance. In conclusion, MSFA demonstrated no significant influence on implant failure and MBL in posterior maxilla in this study.


Odontology ◽  
2021 ◽  
Author(s):  
Lizett Castellanos-Cosano ◽  
Alba Carrasco-García ◽  
José-Ramón Corcuera-Flores ◽  
Javier Silvestre-Rangil ◽  
Daniel Torres-Lagares ◽  
...  

2012 ◽  
Vol 38 (S1) ◽  
pp. 461-466 ◽  
Author(s):  
Eugenia Candel ◽  
David Peñarrocha ◽  
Maria Peñarrocha

The purpose of this article is to review the literature published and to assess the success of treatment of patients with atrophic posterior maxilla with pterygoid implants. Studies from 1992 to 2009 on patients with atrophic posterior maxilla rehabilitated with pterygoid implants were reviewed. Those reporting clinical series of at least 5 patients with atrophic posterior maxilla (Class IV and V of Cawood and Howell), rehabilitated with pterygoid implants and fixed prosthesis, and with 12 months minimum follow-up were included. In each study the following were assessed: number of patients, number of implants, surgical technique, prosthetic rehabilitation, success rate, bone loss, complications and patient satisfaction. Thirteen articles were included, reporting a total of 1053 pterygoid implants in 676 patients. The weighted average success of pterygoid implants was 90.7%; bone loss evaluated radiographically ranged between 0 and 4.5 mm. No additional complications compared with conventional implants were found, and patient satisfaction level with the prosthesis was high. Pterygoid implants have high success rates, similar bone loss levels to those of conventional implants, minimal complications and good acceptance by patients, being therefore an alternative to treat patients with atrophic posterior maxilla. Two anatomical locations in which implants are placed in the retromolar area can be distinguished: the pterygoid process and the pterygomaxillary region. Implant lengths and angulations vary between these two techniques.


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