Analysis of the accuracy of 3d virtual planning in craniomaxillofacial deformities surgery
Catalonia (AECS) - Catalan International University (UIC), Barcelona
Dept. of pediatric maxillofacial surgery, Dept. of pediatric surgery Address: Passeig de Sant Joan de Déu, 2, 08950 Esplugues de Llobregat, Barcelona
Josep Rubio
Josep Rubio
English (B2) or Spanish
4 weeks
Cities/Months Jan Feb Mar Apr May Jun Jul Augt Sep Oct Nov Dec
yes yes yes yes yes yes yes yes yes yes yes yes
Type of Research Project
- Clinical Project without Laboratory work
What is the background of the project?
When dentofacial deformities are severe osteogenic distraction is required. This procedure consists in the accomplishment of an osteotomy, a procedure in which the maxillary bone, in this case, is broken and it´s fragments are stabilized for the creation of the fracture callus (bony and cartilaginous material forming a connecting bridge across a bone fracture during repair) and a progressive elongation of itself to generate bone tissue. This project consists of the evaluation of the effectiveness of 3D surgery planning in patients undergoing facial distraction to correct their occlusion and facial anatomy. Facial distraction is performed in craniofacial syndromes that require osteotomy of LeFort III, in patients with lip injuries with lipophilal fissure that present skeletal class III for severe maxillary hypoplasia, or in patients with mandibular thinning with mandibular skeletal class II which can condition the airway, or in patients with severe mandibular asymmetries due to hemifacial macrosomia.
What is the aim of the project?
Analysis of the accuracy of 3d virtual planning in craniomaxillofacial deformities surgery
What techniques and methods are used?
3D planning involves performing a Computered Tomography and, through a specific software, performing surgery in a virtual environment for the subsequent printing of 3D physical models. Also cutting and positioning guides that transfer virtual surgery to the operator. After the surgery, expected outcomes and actual outcomes are compared. With this analysis, we want to conclude which procedure gives us a more similar outcome, and for this reason is the most advisable.
What is the role of the student?
- The student will observe the practical experiments but will be highly involved in the analysis of the results
- The tasks of the student will be performed on his/her own
- The tasks will be done under supervision
What are the tasks expected to be accomplished by the student?
The student will adquire knowledge in 3D models, such as surgery planning, printing and desing it. He will design the expected results that they want to obtain after the surgery with a specific computer program (he will be taught how to use it at the beginning of the internship). After the outcome was design, the student and the doctor will decide what are the best procedure to obtain that expected outcome. After the surgery (which the student will be allowed to attend), he or she will measure the outcome obtained, and he or she will compare it with the expected one. The student will analyze with a statistics program what procedure gives us the most accuracy outcome (compared with the outcome expected). He or she will compare: outcome expected, outcome obtained according each procedure done.
Will there be any theoretical teaching provided (preliminary readings, lectures, courses, seminars etc)
Yes, it will be some preliminary readings that will be send to the student by the LORE
What is expected from the student at the end of the research exchange? What will be the general outcome of the student?
- The student will prepare an abstract
What skills are required of the student? Is there any special knowledge or a certain level of studies needed?
Basic computer skills The students must have finished their 3rd year
Are there any legal limitations in the student’s involvement
Type of students accepted
This project accepts:
- Medical students
- Graduated students (less than 6 months)
- Students in biomedical fields
- Gateno J; Xia JJ; Teichgraeber JF; Christensen AM; Lemoine JJ; Liebschner MA; et al. Clinical feasibility of computer-aided surgical simulation (CASS) in the treatment of complex cranio-maxillofacial deformities. J Oral Maxillofac Surg. 2007;65:728–34.
- Swennen GR; Mollemans W; Schutyser F. Three-dimensional treatment planning of orthognathic surgery in the era of virtual imaging. J Oral Maxillofac Surg. 2009;67:2080–92.
- Aboul-Hosn Centenero S; Hernández-Alfaro F. 3D planning in orthognathic surgery: CAD/CAM surgical splints and prediction of the soft and hard tissues results – Our experience in 16 cases. J Craniomaxillofac Surg. 2012;40:162–8.
- Bell RB. Computer planning and intraoperative navigation in cranio-maxillofacial surgery. Oral Maxillofac Surg Clin North Am. 2010;22:135–56.
- Adolphs N; Haberl EJ; Liu W; Keeve E; Menneking H; Hoffmeister B. Virtual planning for craniomaxillofacial surgery-7 years of experience. J Craniomaxillofac Surg. 2014;42:e289–95.
- Rubio Palau J; Hueto Madrid JA; González Lagunas J. 3D planning in orthognathic surgery. Rev Esp Ortod. 2012;42:17–21.
- Gateno J; Xia JJ; Teichgraeber JF. New 3-dimensional cephalometric analysis for orthognathic surgery. J Oral Maxillofac Surg. 2011;69:606–22.
- Sesenna E; Magri AS; Magnani C; Brevi BC; Anghinoni ML. Mandibular distraction in neonates: Indications; technique; results. Ital J Pediatr. 2012;38:7.
- Jensen J; Kuseler A; Klit Pedersen T; Norholt S. Premaxillary osteotomy and bone grafting for secondary BCLP repair – Long-term evaluation of growth. J Oral Maxillofac Surg. 2011;69:e16–7.