Naslov
Chemical and crystallographical analysis of bone tissue after laser and drill osteotomies

Autori
Gabrić Pandurić, Dragana ; Musić, Svetozar ; Molčanov, Krešimir ; Katanec, Davor ; Bago, Ivona ; Anić, Ivica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts of the 21th Annual Scientific Meeting of the European Association for Osseointegration (EAO) ; u: Clinical Oral Implants Research 23 (2012) (S7) 1-269 ; Posters - Basic Research, 53-85 ; P137 / Lang, Niklaus P. - Hong Kong : Wiley-Blackwell, 2012, 60-60

Skup
Annual Scientifing Meeting of the European Association for Osseointegration (21 ; 2012)

Mjesto i datum
Kopenhagen, Danska, 10.10.2012. - 13.10.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
bone; laser; SEM; crystallographY; chemistry
(bone; laser; SEM; crystallography; chemistry)

Sažetak
Osteotomies and ostectomies are most frequently performed by rotatory and reciprocating devices in oral and maxillofacial surgery. Mechanically rotating instruments for bone treatment have disadvantages, such as extensive heat deposition, mechanical traumatization, the deposition of metal shavings and possible bacterial contamination. High-energy lasers have been proposed in bone surgery. Histologic and electronic microscopic evaluation of the Er:YAG efficacy have showed minimal thermal damage of bone, precise cutting, rapid osseous healing and osteoinduction. Compared to conventional mechanical drills and saws, it provides non-contact and low-vibration intervention, bacteriostasis, less traumatization and decreased bleeding. Aim of the presented experimental study was to examine and compare chemical and crystallographical changes of the bone tissue after Er:YAG ablation and drilling bone treatment. The experimental study was performed on 30 bone blocks prepared from porcine ribs, simulating the height and the width of intraoral autologous bone blocks commonly used in dental implantology. The main idea was to simulate hole-like preparations for the fixation screw site. For the osteotomies, the Er:YAG laser (AT Fidelis, Fotona, Slovenia) and surgical pilot drill (Screw System, Hager&Meisinger GmbH, Germany) were used. Laser was applied with the 0.9mm spot size in non-contact max mode (1000mJ, 20Hz) and the handpiece was kept at a distance of 10mm from the bone surface to make bone site within the full thickness of the plate. Drill osteotomy was performed with the 1.0mm wide pilot drill, commonly used for the fixation screws preparations, at 15 000rpm, with simultaneous saline irrigation. Analysis of both hole's surfaces using scanning electon microscopy (Field Emission Scanning Electron Microscope, JSM-7000F, Japan) were performed. Based on the SEM technique, mapping of the tissue chemical elements found on the bone surface using Cameo software (CAMEO Chemicals, CAMEO Software Suite, USA) was also performed. Crystallographical analysis was performed using single-crystal X-ray diffractometer (Oxford Diffraction Xcalibur Nova, Oxford Diffraction Ltd, Poland, 2007) and CrysAlis PRO software. Any changes in the chemical composition of bone tissue due to thermal effects, nor any form of thermical modification of hydroxyapatite crystals after Er:YAG ablation procedures were found using SEM based mapping of the chemical elements and X-ray crystallography, compared with control drill sites and surrounding, intact and untreated bone tissue on each sample. Er:YAG laser may be considered an possible tool and effective method in clinical dental implantology and at the specified parameters may become applicable as an alternative method for osteotomies.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

Napomena
DOI: 10.1111/clr.12019

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