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Imamura H, Zhu W, Adachi T, Hiraishi N, Marin E, Miyamoto N, Yamamoto T, Kanamura N, Pezzotti G. Raman Analyses of Laser Irradiation-Induced Microstructural Variations in Synthetic Hydroxyapatite and Human Teeth. J Funct Biomater 2022; 13:jfb13040200. [PMID: 36412841 PMCID: PMC9680245 DOI: 10.3390/jfb13040200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/14/2022] [Accepted: 10/21/2022] [Indexed: 12/14/2022] Open
Abstract
The microstructural and molecular-scale variations induced by laser irradiation treatment on human teeth enamel in comparison with synthetic hydroxyapatite (HAp) were examined through Raman microprobe spectroscopy as a function of irradiation power. The results demonstrated that laser irradiation could modify stoichiometry, microstructure, and the population of crystallographic defects, as well as the hardness of the materials. These modifications showed strong dependences on both laser power and initial nonstoichiometric structure (defective content of HPO4), because of the occurrence of distinct reactions and structural reconstruction. The reported observations can redirect future trends in tooth whitening by laser treatment and the production of HAp coatings because of the important role of stoichiometric defects.
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Affiliation(s)
- Hayata Imamura
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8126, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Wenliang Zhu
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8126, Japan
- Correspondence: (W.Z.); (G.P.)
| | - Tetsuya Adachi
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Dentistry, Kyoto Prefectural Rehabilitation Hospital for Mentally and Physically Disabled, Naka Ashihara, Johyo, Kyoto 610-0113, Japan
| | - Noriko Hiraishi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8549, Japan
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8126, Japan
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Nao Miyamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Toshiro Yamamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Narisato Kanamura
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8126, Japan
- Correspondence: (W.Z.); (G.P.)
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Lu DZ, Zhang YB, Dong W, Bi WJ, Feng XJ, Wen LM, Sun H, Chen H, Zang LY, Qi MC. Effectiveness of strontium-doped brushite, bovine-derived hydroxyapatite and synthetic hydroxyapatite in rabbit sinus augmentation with simultaneous implant installation. J Biomed Mater Res B Appl Biomater 2020; 108:3402-3412. [PMID: 32618100 DOI: 10.1002/jbm.b.34675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 06/05/2020] [Accepted: 06/09/2020] [Indexed: 11/09/2022]
Abstract
Various bone substitutes have been applied in sinus augmentation (SA) to overcome insufficient bone height at the posterior maxilla region caused by pneumatized sinus and severe alveolar bone resorption after teeth loss. However, their effectiveness in SA needs to be further elucidated. In this study, strontium-doped brushite (Sr-DCPD), a new bone substitute, together with bovine-derived hydroxyapatite (bHA) and synthetic hydroxyapatite (sHA) was used in rabbit maxillary SA with simultaneous implant installation. The sinus space-keeping capacity, resorption rate, osteoconductivity, and mechanical properties of regenerated bone, were evaluated by micro-computed tomography (CT), histological analysis, and mechanical testing. Sr-DCPD exhibited the best osteoconductivity and new bone formation (<4 weeks), but its final bone regeneration and removal torque of implants at week 12 were the lowest, mainly due to its poor space-keeping capacity and fast resorption. bHA exhibited the best space-keeping capacity and slowest resorption rate, but relative lower final bone volume and mechanical properties, while sHA showed good space-keeping capacity, slower resorption rate, and the best final bone formation and mechanical properties. sHA was most effective for SA and bHA was also an acceptable bone substitute; however, Sr-DCPD was least effective and not suitable in SA by itself.
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Affiliation(s)
- Da-Zhuang Lu
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Yan-Bo Zhang
- Department of stomatology, Affiliated hospital of Chengde Medical College, Chengde City, Hebei Province, China
| | - Wei Dong
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Wen-Juan Bi
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Xiao-Jie Feng
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Li-Ming Wen
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Hong Sun
- Department of pathology, college of basic medicine, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Hui Chen
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
| | - Lu-Yang Zang
- Department of Endocrinology (Section 1), Tangshan Gongren Hospital, Tangshan City, Hebei Province, China
| | - Meng-Chun Qi
- Department of Oral & Maxillofacial Surgery, College of stomatology, North China University of Science and Technology, Tangshan City, Hebei Province, China
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Kattimani VS, Chakravarthi PS, Kanumuru NR, Subbarao VV, Sidharthan A, Kumar TSS, Prasad LK. Eggshell derived hydroxyapatite as bone graft substitute in the healing of maxillary cystic bone defects: a preliminary report. J Int Oral Health 2014; 6:15-9. [PMID: 25083027 PMCID: PMC4109239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 03/04/2014] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND Since ancient times, use of graft materials to promote healing of defects of bone is wellknown. Traditionally, missing bone is replaced with material from either patient or donor. Multiple sources of bone grafts have been used to graft bone defects to stimulate bone healing. Hydroxyapatite is naturally occurring mineral component of bone, which is osteoconductive. This versatile biomaterial is derived from many sources. The aim of this study is to evaluate the efficacy of eggshell derived hydroxyapatite (EHA) in the bone regeneration of human maxillary cystic bone defects secondary to cystic removal/apicoectomy and compare the material properties of EHA in vitro. MATERIALS AND METHODS A total of eight maxillary bone defects were grafted after cystic enucleation and/or apicoectomy in the year 2008 and completed the study at 1 year. The patients were followed-up 2 weeks after surgery for signs and symptoms of infection or any other complications that may have been related to surgical procedure. Follow-up radiographs were obtained immediately after surgery followed by 1, 2, and 3 months to assess the efficacy of EHA in bone healing. Physicochemical characterization of the EHA was carried out in comparison with synthetic hydroxyapatite (SHA), also compared the biocompatibility of EHA using in vitro cytotoxicity test. RESULTS By the end of the 8(th) week, the defects grafted with EHA showed complete bone formation. However, bone formation in non-grafted sites was insignificant. The values of density measurements were equal or more than that of surrounding normal bone. These results indicate that the osseous regeneration of the bone defect filled with EHA is significant. EHA showed the superior material properties in comparison with SHA. CONCLUSION EHA is a versatile novel bone graft substitute that yielded promising results. Because of its biocompatibility, lack of disease transfer risks, ease of use and unlimited availability, EHA remains a viable choice as regenerative material. EHA is very cost-effective, efficient bone graft substitute, which can be prepared in a very economical way. It is a worthwhile bone substitute because it is safe and easily available material. How to cite the article: Kattimani VS, Chakravarthi PS, Kanumuru NR, Subbarao VV, Sidharthan A, Kumar TS, Prasad LK. Eggshell derived hydroxyapatite as bone graft substitute in the healing of maxillary cystic bone defects: A preliminary report. J Int Oral Health 2014;6(3):15-9.
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Affiliation(s)
- Vivekanand S Kattimani
- Department of Oral and Maxillofacial Surgery, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - P Srinivas Chakravarthi
- Department of Oral and Maxillofacial Surgery, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Narasimha Reddy Kanumuru
- Department of Conservative and Endodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - Vummidisetti V Subbarao
- Department of Conservative Dentistry and Endodontics, Lenora Institute of Dental Sciences, Rajamundry, Andhra Pradesh, India
| | - A Sidharthan
- Department of Mechanical Engineering, Anna University, Chennai, Tamil Nadu, India
| | - T S Sampath Kumar
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
| | - L Krishna Prasad
- Department of Oral and Maxillofacial Surgery, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
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