1.Sagittal plane analysis on craniofacial and upper airway structure of adults with obstructive sleep apnea syndrome
Changtao LI ; Xuemei GAO ; Ying LI
Journal of Practical Stomatology 1995;0(04):-
Objective:To investigate the abnormality of the craniofacial and upper airway structure in adults with obstructive sleep apnea syndrome(OSAS).Methods:The craniofacial skeletal and upper airway morphology of 31 male adult patients with OSAS was measured by cephalometry and compared with that of a control group consisting of 16 male asymptom adults. Results:The significant aberrations in the OSAS group were: relative increased ANB and NA/PA(P
2.The management of postoperative complications of laparoscopic adjustable gastric banding
Fang ZHENG ; Weimin LI ; Changtao XU ; Haorun LIU ; Hongqiang ZHAO
Chinese Journal of General Surgery 2013;(5):354-356
Objective To investigate causes and treatment approaches for postoperative complications after laparoscopic adjustable gastric banding(LAGB).Methods Clinical and follow-up data of 302 cases were reviewed.The body mass index (BMI),percent excess weight loss (% EWL),operation time,intraoperative blood loss,the incidence of complications and management were analyzed and summarized.Results There were no conversion to open surgery.The overall complication rate was 6.29% including 2 cases of gastric wall injury,5 cases of gastric banding slippage (recovered by reoperation).There was no gastric parietal banding corrosion,tube bursting leakage,pulmonary embolism,micronutrient deficiencies,nor mortality.Conclusions The majority of patients were satisfied with the operation effect,still,there were substantial postoperative complications including gastric wall injury,gastric banding slippage.
3.Clinical application of E-MAX glass ceramic onlays in the restorations of the nonvital posterior teeth
LI Changtao ; WU Jing ; GUAN Li ; WANG Ruiyong
Journal of Prevention and Treatment for Stomatological Diseases 2017;25(9):600-604
Objective :
To investigate the clinical use of glass ceramic onlay in the restoration of the non-vital posterior teeth with computer aided design and computer-aided manufacturing technique (CAD/CAM).
Methods :
70 patients with 75 teeth of residual crown were selected and restored with CAD/CAM glass-ceramic onlay after completely root canal therapy. Marginal adaptation, anatomic form, adjacent relation, contour appearance, color match were checked in 12-month follow-up.
Results :
Marginal adaptation, anatomic form, adjacent relation, contour appearance, color match of 73 teeth were satisfactory and 2 cases was excluded because of lost to follow-up. There were no significant differences in the number of cases which met clinical criterion A or B between immediate restoration and 12-month follow-up (P > 0.05), and more than 95% of cases met clinical criterion A.
Conclusion
The CAD/CAM glass-ceramic onlay in the restoration of non-vital posterior teeth can provide better effect of retention and esthetics in a short term observation of 12 months.
4.Clinical Application and Mechanical Analysis of the Treatment of Multiple Rib Fractures and Flail Chest Using Three-wings Rib Plate.
Jianming LI ; Dongdong WANG ; Xiaoqi WANG ; Changtao WANG ; Shengzhang WANG
Chinese Journal of Medical Instrumentation 2020;44(5):395-398
This research evaluated the clinical efficacy of three-wings rib plate in the treatment of multiple rib fractures and flail chest with mechanical analysis and clinical verification. The model of rib and three-wings rib plate was reconstructed. The contact simulation with pretension stress was applied to the plate's fixation, and it was found that the bearable stress of the rib fractures after fixation increased from the result which indicated a good fixation efficacy of the plate. Clinical data of 53 cases of rib fractures and flail chest treated with three-wings rib plate in Shanghai Pudong Hospital of Fudan University were retrospectively analyzed. After the operation, the pain of the patients was relieved. Postoperative CT reconstruction of the chest showed good restoration of the rib fractures, which verified the clinical efficacy of three-wings rib plate. The three-wings rib plate showed a high value in clinical use for treatment of rib fractures.
China
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Flail Chest/surgery*
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Fracture Fixation, Internal
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Humans
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Retrospective Studies
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Rib Fractures/surgery*
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Ribs
5.Quantitative evaluation on clinical characteristics of haze after transepithelial photorefractive keratectomy for astigmatism using corneal densitometry
Shuaifei LI ; Changtao YOU ; Lingling XU ; Dongdong CHEN ; Hongjie MA ; Geng LI
International Eye Science 2025;25(9):1420-1424
AIM: To quantitatively evaluate the clinical characteristics of haze after transepithelial photorefractive keratectomy(TPRK)for astigmatism using corneal densitometry.METHODS:In this retrospective clinical study, a total of 74 patients(106 eyes)with astigmatism ≥1.25 D who underwent TPRK in our hospital from October 2022 to December 2024 were continuously collected. All of the study subjects were divided into transparent group(65 eyes)and haze group(41 eyes)based on whether haze occurred after surgery. Pentacam examination was performed before and after surgery, and corneal densitometry was recorded at the time points of preoperation, 1 mo postoperation in the transparent group and the most severe haze degree in the haze group. The collected corneal densitometry included the average densitometry of the entire corneal layer in the central 2 mm, 2-6 mm, and 6-10 mm areas, as well as the average densitometry of the entire layer of the corneal section in the center 6 mm of the astigmatism axis(astigmatism expressed in negative cylindrical form)and orthogonal axis(the axis perpendicular to the astigmatism axis), and the average densitometry of the entire layer of the corneal section in the nasal and temporal 2-6 mm areas of the astigmatism axis in the haze group of patients with regular astigmatism. The change in corneal densitometry after surgery compared with that before surgery was calculated.RESULTS:There was no statistically significant difference in baseline data such as gender, age, and spherical equivalent between the transparent group and the haze group(all P>0.05). The change in corneal densitometry in the 2-6 mm area of the haze group was greater than that in the transparent group(Z=-2.226, P=0.026), while there was no significant difference in the change of corneal densitometry in the central 2 mm and 6-10 mm areas between the two groups(both P>0.05). There was no significant difference in the change of corneal densitometry between the transparent group and haze group along the orthogonal axis(all P>0.05), while the change of corneal densitometry in the haze group along the astigmatism axis was greater than that in the transparent group(Z=-2.371, P=0.018). The temporal corneal densitometry of patients with regular astigmatism in the haze group after surgery was higher than that of the nasal side, and the change in corneal densitometry was also greater than that of the nasal side(Z=-4.288, P<0.001; Z=-4.043, P<0.001).CONCLUSION:Unlike spherical correction for myopia and hyperopia, haze after TPRK for astigmatism was mainly manifested in the peripheral cutting area of the astigmatism axis, and patients with regular astigmatism had a higher probability or severity of haze on the temporal side of the astigmatism axis than on the nasal side.