Residual calcified material volume of ß-tricalcium phosphate with platelet-rich fibrin in unilateral alveolar bone graft.

BACKGROUND: This study aimed to evaluate the effectiveness of ß-tricalcium phosphate (ß-TCP) and platelet-rich fibrin (PRF) in unilateral alveolar bone graft, involving the percentage of residual calcified material and the average labiopalatal thickness of the grafts on cone beam computed tomography at 6 months after surgery, comparing two age groups 12 years and under and over 12 years old. RESULTS: The mean preoperative defect volume was 0.93 ± 0.20 cm3, with no significant difference between the two groups (p = 0.652). In the postoperative period, we did not record any abnormal bleeding and no infection was observed. Six months after surgery, the mean percentage of residual calcified material was 63.53 ± 16.48% with a significantly higher difference in the age group 12 and under (p < 0.001), and the mean average labiopalatal thickness of the grafted bone was 5.72 ± 1.09 mm with a significantly higher difference in the age group 12 and under (p = 0.011). CONCLUSION: Using ß-TCP and PRF in alveolar bone graft surgery has acceptable effectiveness clinically and on CBCT images, with significantly higher differences of the percentage of residual calcified material and the average labiopalatal thickness of the grafted bone in the group 12 years old and younger than in the older group.

Three-Dimensional Evaluation of Nasolabial Morphology After Applying Presurgical Nasoalveolar Molding in Primary Unilateral Cheiloplasty Using the Modified Millard Technique.

OBJECTIVE: To compare the soft tissue measurements of the upper lip and the nose on the cleft side and the noncleft side before surgery, immediately after cheiloplasty and two months after surgery. DESIGN: Descriptive clinical study with one group, prospective. SETTING: Department of Odonto-Stomatology, Children's Hospital 1, at Ho Chi Minh City - Vietnam. PATIENTS: 31 patients with a unilateral complete cleft lip participated in this study, 30 patients were evaluated at the time two months after surgery. INTERVENTIONS: Interventions include PNAM and cheiloplasty by modified Millard technique. MAIN OUTCOME MEASURES: Patients proceed to acquire 3D images of lips and nose, define landmarks and measure dimensions. There are 11 evaluators to be compared, p < 0.05 was considered statictical significance. RESULTS: After two months of surgery, on cleft side and noncleft side, the lengths of the upper lip were 10.87 ± 0.80 and 11.92 ± 0.78 (mm), the widths of the upper lip were 16.06 ± 1.10 and 16.40 ± 1.02 (mm), the heights of the nostril were 4.85 ± 0.44 and 5.93 ± 0.43 (mm), the lengths of columella were 4.08 ± 0.37 and 4.93 ± 0.38 (mm), and the widths of the nostril were 9.07 ± 0.37 and 8.37 ± 0.40 (mm). CONCLUSION: Cheiloplasty by modified Millard technique on the patients who used PNAM showed that after two months of surgery, the morphology of the upper lip and nose has a slight disproportion with the nasolabial measurements of the cleft side being smaller than on the noncleft side.