Semiautomatic device for in vitro/ experimental bone perforation in dental implant research.
PURPOSE
The present study presents a semiautomatic device developed to perform in vitro experiments using surgical drills for assisting dental implant research. It was built to perform tests independent of human direct contact, and contains an adjustable toolholder for engaging different types of implant contra angle hand pieces, in which different drills can be adapted. The researcher is able to make a range of adjustments on the machine, such as controlling the drilling force and depth.


MATERIALS AND METHODS
The device was tested on samples of both synthetic and natural bone with type I density, and a sequence of drills selected to perform the perforations. Drilling time and perforation force exerted during drilling were evaluated, as both parameters are required to be standardized.


RESULTS
It was observed that the drilling performed using the device was uniform using both types of bone, although the drilling time for the synthetic bone was higher. All perforations were exactly on the spot previously determined, and without variations in drill angulations. The perforation force was higher for the lance pilot drill for both bone types, and the natural bone required a higher axial force than the synthetic bone.


CONCLUSION
Thus, we consider this device trustable to perform standardized analysis and provide accurate results. It can be used for tests performed in universities and companies that develop dental implant materials and products.
['Antônio da Costa Borges|Marco|M|', 'Margonar|Rogério|R|', 'Spinelli|Maciel Antônio|MA|', 'Gomes Cavalcanti|Indira Moraes|IM|', 'Pimentel Lopes de Oliveira|Guilherme José|GJ|', 'Queiroz|Thallita Pereira|TP|']
D001842:Bone and Bones D003758:Dental Implantation, Endosseous D015921:Dental Implants D018865:Dental Research D006801:Humans D010027:Osteotomy
Device Implant research Drilling force Natural bone Synthetic bone Drilling temperature