#ABRIDGE PRONUNCIATION SOFTWARE#

Currently, OSNS-assisted positioning of traction hook insertion in TSDO surgery had not been reported yet. It can effectively improve the accuracy and reduce the difficulty by combining with spatial positioning technology to feedback the position of surgical instruments in real time 17. In CAS, the optical surgical navigation system (OSNS) enables surgeons to observe the surgical path clearly via a display or an augmented reality device. With the rapid development of information technology, many procedures could be more precise with the help of computer-aided surgery (CAS) 15, 16. Thus, although TSDO is the preferred treatment for correction of midfacial dysplasia, there is much room for improvement, and the most critical aspect is to locate the surgical path precisely. They found that 8 of 85 patients experienced postoperative complications, three of whom have no traction hooks due to imprecise positioning 12, 13, 14. In addition, the long-term follow-up demonstrated that imprecise positioning during TSDO increased the risk of postoperative complications. 9, 10, 11 found some disadvantages of TSDO, including difficulty in accurate location of surgical path, prolonged operation time, and excess surgical bleeding. 7, 8 introduced trans-sutural distraction osteogenesis (TSDO), a minimally invasive and non-osteotomy traction procedure that could effectively correct midfacial dysplasia while avoiding the sequelae associated with osteotomy.

This method had major disadvantages of large trauma and high technical difficulty 4, 5, 6. It requires exposure of the maxilla and osteotomy of the bilateral maxilla to achieve the effect of advancement. In 1990s, traditional orthognathic surgery combined with Le Forts osteotomy was used to correct midfacial hypoplasia.

Therefore, the treatment of midfacial hypoplasia has been one of the research hotspots in maxillofacial surgery 3. It not only affects the appearance, pronunciation, and breathing, but also hurts patients’ self-esteem and causes serious physical and mental problems 2. Midfacial hypoplasia is a common maxillofacial deformity, which is mostly observed in patients with cleft lip and palate 1. OSNS can guide the TSDO safely and effectively. In conclusioin, OSNS-assisted TSDO can noninvasively correct midfacial dysplasia, improve surgical precision, reduce bleeding and obtain better clinical results. All patients demonstrated good treatment results without complications. The surgical procedure was successful, with a postoperative follow-up of 4–5 months. The patients included five boys and one girl, with an average age of 10 years five with postoperative cleft lip and palate, and one without combined cleft lip and palate. The accuracy and results of the procedure were initially evaluated by comparing the preoperative and postoperative periods.

#ABRIDGE PRONUNCIATION SOFTWARE#

Preoperatively, a head computed tomography was performed, and the data were imported into Mimics software (version: 20.0.0.691, Materialise Inc, Belgium) to design a three-dimensional simulation of the surgical approach. Six consecutive patients with midfacial hypoplasia who required TSDO were included in the study. This study aimed to evaluate the application of an optical surgical navigation system (OSNS) developed for TSDO. However, trans-sutural distraction osteogenesis (TSDO) remains some disadvantages, including difficulty in accurate location of surgical path, prolonged operation time, and excess surgical bleeding. Midfacial hypoplasia is a common maxillofacial deformity in patients with cleft lip and palate, which requires surgical treatment.

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