Survival and Marginal Bone Loss of Dental Implants Supporting Cad-Cam Angled Channel Restorations: A Split-Mouth Retrospective Study

Overview

Journal Eur J Dent

Publisher Thieme

Specialty Dentistry

Date 2020 May 25

PMID 32447749

Citations 7

Authors

Eduardo Anitua

Sofia Fernandez-de-Retana

Mohammad Hamdan Alkhraisat

Affiliations

Soon will be listed here.

Abstract

Objective: The aim of this study was to determine whether the screw emergence angulation correction by computer-aided design (CAD)-computer-aided manufacturing (CAM) can influence implant survival and marginal bone stability.

Materials And Methods: This was a controlled split-mouth retrospective study of angled channel restorations. The dental implants supporting the prosthesis were divided into the following two groups: the first group (Group 1) included the implants that required screw channel angulation, while the second group (Group 2) included the implants that did not require this correction to screw the prosthesis to the implant. The main outcome variables were implant survival and marginal bone loss (MBL).

Results: A total of 68 dental implants placed in 22 patients were included in the final cohort. The mean follow-up time was 39.65 ± 15.20 months. None of the studied implants failed during the follow-up period and the mean MBL was - 0.29 ± 0.51 mm at the end of the follow-up. No statistical differences in the MBL were observed between the two groups of the study (-0.18 ± 0.51 and - 0.23 ± 0.58 mm, respectively).

Conclusion: The angulation of the screw channel with CAD-CAM technology resulted in good clinical outcomes and did not affect MBL. Thus, the angulated screw channel might be considered an alternative to face undesired screw emergencies. Future prospective clinical studies should confirm these results.

Citing Articles

Influence of Framework Material and Abutment Configuration on Fatigue Performance in Dental Implant Systems: A Finite Element Analysis.

Erdogdu M, Demirel M, Mohammadi R, Guntekin N, Ghanbarzadeh Chaleshtori M Medicina (Kaunas). 2024; 60(9).

PMID: 39336504 PMC: 11433853. DOI: 10.3390/medicina60091463.

Comparison of Aesthetic, Mechanical Outcome, and Bone Loss in Angulated Screw Channels (ASCs) and Cement-Retained Implant-Supported Prosthesis: A Case-Control Study.

Rella E, De Angelis P, Papetti L, Damis G, Gasparini G, DAddona A Dent J (Basel). 2024; 12(8).

PMID: 39195077 PMC: 11353712. DOI: 10.3390/dj12080233.

The mechanical complications and behavior of angulated dental implant abutment systems versus conventional abutments, a narrative review.

Albakri A Saudi Dent J. 2024; 36(8):1072-1077.

PMID: 39176153 PMC: 11337959. DOI: 10.1016/j.sdentj.2024.06.002.

Comparative evaluation of biological, mechanical, and patient-reported outcomes of angulated screw channel abutments versus multi-unit abutment-retained single-unit implant restorations in the anterior esthetic zone: An- study.

Varshney N, Kusum C, Trivedi A, Kaushik M, Dubey P, Bali Y J Indian Prosthodont Soc. 2023; 23(3):244-252.

PMID: 37929363 PMC: 10467320. DOI: 10.4103/jips.jips_101_23.

Clinical and Laboratory Outcomes of Angled Screw Channel Implant Prostheses: A Systematic Review.

Rasaie V, Abduo J, Falahchai M Eur J Dent. 2022; 16(3):488-499.

PMID: 35189643 PMC: 9507569. DOI: 10.1055/s-0041-1740298.

References

Nagahisa K, Arai K, Baba S . Study on Oral Health-Related Quality of Life in Patients After Dental Implant Treatment with Patient-Reported Outcome. Int J Oral Maxillofac Implants. 2018; 33(5):1141-1148. DOI: 10.11607/jomi.6496. View

Anitua E . Plasma rich in growth factors: preliminary results of use in the preparation of future sites for implants. Int J Oral Maxillofac Implants. 1999; 14(4):529-35. View

Omori Y, Lang N, Botticelli D, Papageorgiou S, Baba S . Biological and mechanical complications of angulated abutments connected to fixed dental prostheses: A systematic review with meta-analysis. J Oral Rehabil. 2019; 47(1):101-111. DOI: 10.1111/joor.12877. View

Anitua E, Tejero R, Zalduendo M, Orive G . Plasma rich in growth factors promotes bone tissue regeneration by stimulating proliferation, migration, and autocrine secretion in primary human osteoblasts. J Periodontol. 2012; 84(8):1180-90. DOI: 10.1902/jop.2012.120292. View

Wittneben J, Millen C, Bragger U . Clinical performance of screw- versus cement-retained fixed implant-supported reconstructions--a systematic review. Int J Oral Maxillofac Implants. 2014; 29 Suppl:84-98. DOI: 10.11607/jomi.2014suppl.g2.1. View

Segal P, Makhoul A, Eger M, Lucchina A, Winocur E, Mijiritsky E . Preliminary Study to Evaluate Marginal Bone Loss in Cases of 2- and 3-Implant-Supported Fixed Partial Prostheses of the Posterior Mandible. J Craniofac Surg. 2018; 30(4):1068-1072. DOI: 10.1097/SCS.0000000000004855. View

Sousa M, Tribst J, Dal Piva A, Borges A, de Oliveira S, da Cruz P . Capacity to Maintain Placement Torque at Removal, Single Load-to-Failure, and Stress Concentration of Straight and Angled Abutments. Int J Periodontics Restorative Dent. 2019; 39(2):213-218. DOI: 10.11607/prd.3998. View

Anitua E, Flores C, Pinas L, Alkhraisat M . Frequency of Technical Complications in Fixed Implant Prosthesis: The Effect of Prosthesis Screw Emergence Correction by Computer-Aided Design/Computer-Aided Manufacturing. J Oral Implantol. 2018; 44(6):427-431. DOI: 10.1563/aaid-joi-D-17-00229. View

Singh N, Chalapathy S, Thota R, Chakravarthula K, Tirnati R, Yenugupalli K . Evaluation of Stress Distribution Among Two Different Pre-angled Abutments of Implants in Two Different Densities of Bone at Different Levels Along the Implant-/n Vitro Study. J Contemp Dent Pract. 2019; 19(11):1370-1375. View

10.

Bilgin M, Baytaroglu E, Erdem A, Dilber E . A review of computer-aided design/computer-aided manufacture techniques for removable denture fabrication. Eur J Dent. 2016; 10(2):286-291. PMC: 4813451. DOI: 10.4103/1305-7456.178304. View

11.

Kim Y, Lim G, Lee J, Jeong S . Marginal bone level changes in association with different vertical implant positions: a 3-year retrospective study. J Periodontal Implant Sci. 2017; 47(4):231-239. PMC: 5577441. DOI: 10.5051/jpis.2017.47.4.231. View

12.

Lin C, Wang J, Ramp L, Liu P . Biomechanical response of implant systems placed in the maxillary posterior region under various conditions of angulation, bone density, and loading. Int J Oral Maxillofac Implants. 2008; 23(1):57-64. View

13.

Cavallaro Jr J, Greenstein G . Angled implant abutments: a practical application of available knowledge. J Am Dent Assoc. 2011; 142(2):150-8. DOI: 10.14219/jada.archive.2011.0057. View

14.

Anitua E, Orive G, Aguirre J, Ardanza B, Andia I . 5-year clinical experience with BTI dental implants: risk factors for implant failure. J Clin Periodontol. 2008; 35(8):724-32. DOI: 10.1111/j.1600-051X.2008.01248.x. View

15.

Sailer I, Muhlemann S, Zwahlen M, Hammerle C, Schneider D . Cemented and screw-retained implant reconstructions: a systematic review of the survival and complication rates. Clin Oral Implants Res. 2012; 23 Suppl 6:163-201. DOI: 10.1111/j.1600-0501.2012.02538.x. View

16.

Kumar G, Mahesh B, George D . Three dimensional finite element analysis of stress distribution around implant with straight and angled abutments in different bone qualities. J Indian Prosthodont Soc. 2014; 13(4):466-72. PMC: 3792315. DOI: 10.1007/s13191-012-0242-6. View

17.

Anitua E, Carda C, Andia I . A novel drilling procedure and subsequent bone autograft preparation: a technical note. Int J Oral Maxillofac Implants. 2007; 22(1):138-45. View

18.

von Elm E, Altman D, Egger M, Pocock S, Gotzsche P, Vandenbroucke J . The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies. J Clin Epidemiol. 2008; 61(4):344-9. DOI: 10.1016/j.jclinepi.2007.11.008. View

19.

Hernandez-Marcos G, Hernandez-Herrera M, Anitua E . Marginal Bone Loss Around Short Dental Implants Restored at Implant Level and with Transmucosal Abutment: A Retrospective Study. Int J Oral Maxillofac Implants. 2018; 33(6):1362-1367. DOI: 10.11607/jomi.6740. View

20.

Anitua E, Alkhraisat M, Pinas L, Orive G . Efficacy of biologically guided implant site preparation to obtain adequate primary implant stability. Ann Anat. 2014; 199:9-15. DOI: 10.1016/j.aanat.2014.02.005. View