Evaluation of Er,Cr:YSGG LASER in flapless functional crown lengthening (A randomized controlled clinical trial with microbial analysis)
Hussein, H., Ezzat, O., El-khazragy, N., Hussein, R. (2023). Evaluation of Er,Cr:YSGG LASER in flapless functional crown lengthening (A randomized controlled clinical trial with microbial analysis). EKB Journal Management System, 69(2), 1059-1068. doi: 10.21608/edj.2023.176958.2382
Hatem Hussein; Ola Ezzat; nashwa El-khazragy; Radwa Hussein. "Evaluation of Er,Cr:YSGG LASER in flapless functional crown lengthening (A randomized controlled clinical trial with microbial analysis)". EKB Journal Management System, 69, 2, 2023, 1059-1068. doi: 10.21608/edj.2023.176958.2382
Hussein, H., Ezzat, O., El-khazragy, N., Hussein, R. (2023). 'Evaluation of Er,Cr:YSGG LASER in flapless functional crown lengthening (A randomized controlled clinical trial with microbial analysis)', EKB Journal Management System, 69(2), pp. 1059-1068. doi: 10.21608/edj.2023.176958.2382
Hussein, H., Ezzat, O., El-khazragy, N., Hussein, R. Evaluation of Er,Cr:YSGG LASER in flapless functional crown lengthening (A randomized controlled clinical trial with microbial analysis). EKB Journal Management System, 2023; 69(2): 1059-1068. doi: 10.21608/edj.2023.176958.2382

Evaluation of Er,Cr:YSGG LASER in flapless functional crown lengthening (A randomized controlled clinical trial with microbial analysis)

Egyptian Dental Journal
Article 6, Volume 69, Issue 2 - Serial Number 3, April 2023, Page 1059-1068  XML PDF (804.07 K)
Document Type: Original Article
DOI: 10.21608/edj.2023.176958.2382
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Authors
Hatem Hussein email orcid 1; Ola Ezzatorcid 2; nashwa El-khazragyorcid 3; Radwa Husseinorcid 4
1Master degree candidate at Oral medicine, Periodontology and Oral Diagnosis Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
2Assistant Professor of Oral Medicine and Periodontology, Faculty of Dentistry, Ain Shams University
3Professor of Clinical Pathology and Hematology, Faculty of Medicine, Ain Shams University.
4Lecturer of Oral Medicine, Periodontology and Oral diagnosis, Faculty of Dentistry, Ain Shams University.
Abstract
Background: Several studies have described the benefits of LASER when used for crown lengthening (CL). However, there has been a lack of clinical trials comparing surgical functional crown lengthening (FCL) and LASER flapless CL. The aim of this study was to compare both methods together in terms of soft-tissue wound healing, gingival marginal stability and sub-gingival bacterial load reduction.
Subjects and methods: Twenty patients with eligible teeth for FCL were recruited and randomly allocated to either; Group I: 10 posterior teeth indicated for FCL received closed flap laser assisted CL utilizing (Er,Cr:YSGG) laser or Group II : 10 posterior teeth indicated for FCL received open flap conventional surgical technique. Soft tissue healing was evaluated on the 7th day,45th day and after 3 months. Gingival marginal stability was evaluated immediately after surgery and after 3 months.Sub-gingival bacterial load was assessed at base-line, on the 7th day and after 45 days.
Results: Group 1 showed significant better soft tissue healing after 7 days but there was no significant difference between the 2 groups after 45 days as well as after 3 months. Regarding the gingival marginal stability, there was no significant difference between both groups. There was a significant reduction in sub-gingival bacterial load in both groups, however, group 1 showed significant lower bacterial load after 7 days as well as after 45 days.

Conclusion: Closed flap laser-assisted CL using Er,Cr:YSGG laser can be used as an alternative procedure for conventional surgical FCL with better and faster healing and bacterial disinfection.
Keywords
Badly-broken teeth; Biologic width violation; Crown lengthening; Erbium Laser; Flapless Surgery
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