Nicolas Zaragoza Velazquez has completed his Ph.D at Paulista State University from Sao Paolo Brazil. He is professor researcher in Orthodontics at the Authonomus University of Aguascalientes in Mexico. He has published papers in local and Brazilian journals Dr. Velazquez has made research projects involving the rapid palatal expansion in normal and fissure patients, later he focused in the field of dental adhesive materials (Universal systems adhesives) and he made a study of Prevalence of the third molar impacted in dental school students, lately he worked developing new radiographic surgical guides to place self drilling orthodontic minicrews with safe and endodontic ring miniguides to localize radicular resorption and for apicectomy and microsurgical procedures. Dr. Velazquez belongs to a number of professional organizations, including the Brazilian Orthodontics Association, Ibero American Dental Federation. He is also involved in many committees like (Member of the Commission (Dental Health Care) of Oregon – Mexico Health Professional Exchange 2002-2004
As we now in the last decades mini-implants have gained popularity in orthodontics field, precise placement of mini-screws is a critical point to the success of the skeletal anchorage, thus a careful clinical and radiographic diagnostic before insertion miniscrew is a essential requirement to achieve the central point of the radicular septum or another critical maxillary area, the correct execution and application of these pre-surgical procedures should avoid possible iatrogenic damages in periodontal ligament, dental roots, nasomaxillary cavities, or even important vascular tissues. As of today, periapical radiographs is a regular and swift pre surgical procedure during miniscrew insertion technique, but it provide only bidimensional images. Nevertheless, accurate execution of the radiographic parallax technique can offer us useful and precise radiographic information to decide the right local insertion of miniscrews in to the septum bone. The purpose of this report is to describe the fast application of new positioning circular guides in conjunction with a parallax radiographic protocol before place orthodontic mini-screws into the interradicular bone space. Key words: orthodontic mini-implants, miniscrews, radiographic protocol, chirurgic guide, skeletal anchorage
Simona Tecco has completed her PhD in Oral Science at G D’Annunzio University and a second PhD in Physiology of Occlusion and Dental Materials at the University of Torino. She completed her Orthodontic specialization from the Catholic University of Rom. She is a Researcher at the University Vita-Salute San Raffaele, Milan, Italy. She has published more than 80 papers in reputed journals and has been serving as an Editorial Board Member of repute.
The 3D Tele Motion Tracking (TMT) is able to detect the movement in space of passive markers and to calculate geometric relationships derived from the positions of the markers, thanks to the associated software that reconstruct the figure in three dimensions and graphically represent its movement. The equipment is also able to calculate angles, distances and associated kinetic variables. This study aimed to evaluate the reliability of 3D-TMT in a static cephalometric evaluation. A group of 40 patients (20 males and 20 females; mean age 14.2+/-1.2 years) in permanent dentition was included in the study. For each subject, measurements were compared by the 3D TMT cephalometric analysis with a conventional cephalometric analysis carried out on radiographs in the frontal view. Nine passive markers were positioned on the face skin for the detection of the profile of the patient. Through the acquisition of these points were found corresponding plans for three-dimensional posterior-anterior cephalometric analysis. The cephalometric results carried out with 3D TMT and with traditional posterior-anterior cephalometric showed that 3D TMT system values was slightly higher than the values measured on radiographs. These differences are statistically significant, nevertheless their correlation is very high. The recorded values obtained using the 3D-TMT analysis were highly correlated to cephalometric analysis. 3D TMT is a non invasive tool that can be used for cranio-facial development research to monitor the control group.