Alvaro Francisco Bosco1, Paula Lazilha Faleiros2, Luana Rodrigues Carmona3, Valdir Gouveia Garcia4, Letícia Helena Theodoro5, Nathália Januario de Araujo6, Maria José Hitomi Nagata7, Juliano Milanezi de Almeida8. 1. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: afbosco@hotmail.com. 2. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: paulal.faleiros@hotmail.com. 3. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: luanarcarmona@yahoo.com.br. 4. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil; University Center of Educational Foundation of Barretos - UNIFEB, Department of Periodontics, Dental School of Barretos, Avenida Professor Roberto Frade Monte, n° 389, CEP: 14783-226 Barretos, São Paulo, Brazil. Electronic address: vg.garcia@uol.com.br. 5. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: letheodoro@uol.com.br. 6. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: nathaliajanuario@outlook.com. 7. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: mjnagata@uol.com.br. 8. Univ. Estadual Paulista - UNESP, Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, Rua José Bonifácio, n° 1193, CEP: 16015-050 Araçatuba, São Paulo, Brazil. Electronic address: jumilanezi@hotmail.com.
Abstract
OBJECTIVE: To histomorphometrically analyze the effect of low-level laser therapy (LLLT) on bone formation process in surgically created critical-size defects (CSDs) treated with bovine bone graft (BBG) and its influence over particles' resorption of BBG. METHODS: A 10-mm diameter CSD was surgically created in the calvaria of 64 male rats, which were distributed into 4 experimental groups: the C group (control), only blood clot; the LLLT group, LLLT (GaAlAs, 660nm) and blood clot; the BBG group, CSD filled with BBG; the BBG/LLLT group, LLLT and CSD filled with BBG. Animals were euthanized at either 30 or 60days post-operation. A histological analysis was performed. Additionally, the percentage of newly formed bone area (NFBA) and remaining particles areas (RPA) of BBG were histometrically evaluated and data statistically analyzed. RESULTS: The LLLT (5.82±2.05; 7.34±1.01) group presented significantly greater NFBA when compared to the C group (1.61±0.30; 5.59±0.94) at 30 and 60days post-operation (p<0.05). The BBG/LLLT group (7.39±1.45; 9.44±2.36) presented significantly greater NFBA than the BBG group (3.85±1.56; 8.02±0.63) at 30 and 60days postoperation (p<0.05). There was no significant difference in the mean percentage of implanted material RPA between the BBG and the BBG/LLLT groups. CONCLUSIONS: LLLT can improve bone formation process in CSD filled or not with BBG in rat calvaria, but it is not able to accelerate particles resorption of this material in the interior of bone defect.
OBJECTIVE: To histomorphometrically analyze the effect of low-level laser therapy (LLLT) on bone formation process in surgically created critical-size defects (CSDs) treated with bovine bone graft (BBG) and its influence over particles' resorption of BBG. METHODS: A 10-mm diameter CSD was surgically created in the calvaria of 64 male rats, which were distributed into 4 experimental groups: the C group (control), only blood clot; the LLLT group, LLLT (GaAlAs, 660nm) and blood clot; the BBG group, CSD filled with BBG; the BBG/LLLT group, LLLT and CSD filled with BBG. Animals were euthanized at either 30 or 60days post-operation. A histological analysis was performed. Additionally, the percentage of newly formed bone area (NFBA) and remaining particles areas (RPA) of BBG were histometrically evaluated and data statistically analyzed. RESULTS: The LLLT (5.82±2.05; 7.34±1.01) group presented significantly greater NFBA when compared to the C group (1.61±0.30; 5.59±0.94) at 30 and 60days post-operation (p<0.05). The BBG/LLLT group (7.39±1.45; 9.44±2.36) presented significantly greater NFBA than the BBG group (3.85±1.56; 8.02±0.63) at 30 and 60days postoperation (p<0.05). There was no significant difference in the mean percentage of implanted material RPA between the BBG and the BBG/LLLT groups. CONCLUSIONS: LLLT can improve bone formation process in CSD filled or not with BBG in rat calvaria, but it is not able to accelerate particles resorption of this material in the interior of bone defect.
Authors: Patricia Brassolatti; Ana Laura Martins de Andrade; Paulo Sérgio Bossini; Daiana Laurenci Orth; Fernanda Oliveira Duarte; Ana Beatriz Dos Anjos Souza; Nivaldo Antonio Parizotto; Fernanda de Freitas Anibal Journal: Lasers Med Sci Date: 2018-10-06 Impact factor: 3.161
Authors: Ruxandra Elena Luca; Carmen Darinca Todea; Virgil-Florin Duma; Adrian Bradu; Adrian Gh Podoleanu Journal: Quant Imaging Med Surg Date: 2019-05
Authors: Matheus Afm Santos; Daniela N Silva; Karla Rovaris; Frederico B Sousa; Eugenia LA Dantas; Lucas A Loureiro; Thiago M C Pereira; Silvana S Meyrelles; Rossiene M Bertollo; Elisardo C Vasquez Journal: Front Physiol Date: 2022-02-25 Impact factor: 4.566