Yilai Wu

Shanghai Jiao Tong University, Shanghai, Shanghai Shi, China

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Publications (5)4.66 Total impact

  • Yilai Wu · Yusheng Yang · Yang Chen · Yong Zhang · Guomin Wang ·
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    ABSTRACT: Objective : This study aimed to analyze the asymmetry of the pyriform aperture and alar base in patients with unilateral secondary nasal deformities by three-dimensional computed tomography (3D-CT). Methods : 3D-CT images of the subject group of 101 adult patients and of a control group of 65 normal adults were examined. Sixty-nine patients without alveolar bone grafting (ABG) were classified as Group A, and 32 patients with ABG were classified as Group B. Seven landmarks (INM, LPA, IPA, Gbase, Gsup, Glat, and Sbal) were measured for both the subject and control groups, and comparative analyses were done to assess the degree of asymmetry in the subject group. Results : For over 95% of Group A and 80% to 85% of Group B, the index of LPA and IPA showed asymmetry or marked asymmetry. The index of Gbase, Glat, Gsup, and Sbal showed symmetry for around 50% of Group A and about 60% of Group B. In Group A, dorsal, lateral, and caudal translocation was found on the cleft side in LPA and IPA, while all soft landmarks showed dorsal translocation. In Group B, caudal translocation was found in both LPA and IPA, but only LPA appeared dorsal on the cleft side, while Glat showed dorsal and caudal translocation. Conclusion : The results indicated that the degree of asymmetry of hard tissue landmarks far exceeded that of the soft tissue landmarks, and the degree of asymmetry of pyriform aperture was higher than expected for patients after ABG.
    The Cleft Palate-Craniofacial Journal 11/2013; 50(6):696-703. DOI:10.1597/11-144.1 · 1.20 Impact Factor
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    ABSTRACT: To establish a method to analyze malformed maxillae of postoperative adult patients with unilateral complete cleft lip and palate in 3 dimensions. A total of 35 landmarks were defined and used to reconstruct 3-dimensional maxillary images of healthy Chinese Han subjects and 30 postoperative Chinese Han adult patients (17 men and 13 women, with mean age of 19.07 years) with unilateral complete cleft lip and palate. This was done using spiral computed tomography, and their corresponding parameters were analyzed using SimPlant software, version 11.04, and compared by t test using SAS software, version 6.12. Of the 7 centered landmarks, A and ANS in the patients were obviously deviated to the nonoperative side (P < .01) and the symmetrical landmark pairs INM'-INM, SNM'-SNM and SPr'-SPr, but not MA'-MA, SoF'-SoF, and LPAC-LPA in the infraorbital region and piriform aperture peritreme in healthy subjects were shifted toward the coordinate sagittal plane S. The data also showed that the maxillae in the patients' operative side were hypoplastic, especially in the posteroanterior direction compared with the nonoperative side and healthy subjects. The proposed method can precisely measure the distances of the maxillary landmarks to 3-dimensional coordinates and has application potential in evaluating maxillary deformity in patients with postoperative unilateral complete cleft lip and palate.
    Journal of oral and maxillofacial surgery: official journal of the American Association of Oral and Maxillofacial Surgeons 12/2011; 69(12):e549-57. DOI:10.1016/j.joms.2011.07.024 · 1.43 Impact Factor
  • Yilai Wu · Guomin Wang · Yusheng Yang · Yong Zhang ·
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    ABSTRACT: Secondary bone grafting plays an important role in the multimodal therapy of patients with cleft lips, alveoli, or palates. Through a comparative study of the nasal profile before and after alveolar bone grafting, this article aimed to determine the appropriate timing of operation and keys to success. In the study, 38 cases (23 boys and 15 girls aged 9-13 years, with an average of 11.4 years) were examined of patients with unilateral cleft lips or palates, upon whom secondary bone grafting was performed under general anesthesia. Comparative studies are conducted on their nostril widths and heights in both the cleft side and the noncleft side as well as the widths and angles of the alar bases measured in the preoperative, postoperative, and follow-up (6 months) periods respectively. Of the 29 cases examined 6 months after the operation, 4 indicate failure as the amount of bone loss exceeds 50%, whereas in the other 25 cases, both the nostril widths of the cleft side have increased, and the nostril heights of the cleft side have decreased significantly (P < 0.01). As shown in the study, the nasal profile after alveolar bone grafting is changed obviously; thus, it is recommended that patients not receive rhinoplasty before bone grafting or have both operations at the same time.
    The Journal of craniofacial surgery 11/2010; 21(6):1904-7. DOI:10.1097/SCS.0b013e3181f4b18b · 0.68 Impact Factor
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    ABSTRACT: Several million individuals with cleft lip and palate (CLP) exist in China, and it is estimated that at least 30,000 newborns with CLP are born every year. How to give them an optimal treatment with excellence is still a problem in most areas. The treatment of cleft patients presents various situations around world that are different from those in the United States and Europe. In this article, we reviewed the current status of CLP management in our country and shared our experience from one of the biggest CLP centers in China. We hope the management of cleft can be improved, and more patients can be treated by dedicated teams and dedicated centers in China.
    The Journal of craniofacial surgery 09/2009; 20 Suppl 2:1637-9. DOI:10.1097/SCS.0b013e3181b1c1ae · 0.68 Impact Factor
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    ABSTRACT: Speech disorders are the most common presentations of patients with velocardiofacial syndrome (VCFS) and are difficult to be treated with very good treatment outcome. The purpose of this study was to evaluate the clinical diagnosis and outcomes of sequential treatment of therapy for VCFS. A retrospective study of 120 patients (ages ranged from 4.3 to 38 years old, with a mean age of 10.2 years) was conducted and thoroughly reviewed retrospectively oral speech evaluation, oral examinations, and lateral cephalometry of 33 patients. Comparison was made in 33 patients (age range, 4-17 years; mean age, 7.24 years); patients were compared with and age-matched controls, using IQ scores and speech intelligibility tests. A Chinese speech intelligibility test and blowing test were also used to evaluate the outcomes of modified pharyngeal flap surgery, behavioral therapy, and speech therapy. The average age of the primary diagnosis for VCFS was 13.9 years. No cleft palate and reduced mobility in pharyngeal function were found by oral examination. Speech intelligibility in the 33 patients with VCFS was 33%, with an average IQ test score of 67. Chinese speech intelligibility of 33 patients who underwent pharyngoplasty and speech therapy was improved from 47% to 98%, and the duration of blowing test increased from 17 to 38 seconds. The average length of therapy period was estimated to be 8 months. Hypernasality and reduced mobility in palate and pharyngeal structures of VCFS patients could be measured with Chinese speech intelligibility test and blowing tests. The pharyngeal flap surgery and the behavioral therapy are proved to be an effective protocol for VCFS.
    The Journal of craniofacial surgery 09/2009; 20 Suppl 2(Suppl 2):1934-8. DOI:10.1097/SCS.0b013e3181b6cc9c · 0.68 Impact Factor

Publication Stats

20 Citations
4.66 Total Impact Points

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  • 2009-2013
    • Shanghai Jiao Tong University
      • Department of Oral and Maxillofacial Surgery
      Shanghai, Shanghai Shi, China