Publications by authors named "Chen-jing Cheng"
Article Synopsis
- The study aims to explore how different shapes of attachments on maxillary anterior teeth affect tooth movement when using clear aligners, looking to offer valuable information for orthodontic clinical design.
- Various attachment shapes (no attachment, rectangular, wedge-shaped, and curved arc) were analyzed using 3D finite element simulations to observe their biomechanical effects on lateral incisors and other dental structures under load.
- Results indicated that rectangular and curved arc attachments enhance coronal and vertical control during tooth movement, showing that the shape of the attachment impacts efficiency and distribution of stress on the periodontal ligament significantly.
[Coblation treatment for laryngeal papilloma in adult].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
April 2011
Objective: To evaluate the effect and feasibility of coblation treatment for laryngeal papilloma in adult.
Methods: A total of 18 patients with laryngeal papilloma treated by coblation from April 2008 to June 2010 was retrospectively analysed. There were 4 cases of multiple laryngeal papilloma and 14 cases of single laryngeal papilloma.
[Comparative analysis of polysomnography and micro-sensitive mattress-sleep monitor used for obstructive sleep apnea hypopnea syndrome].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
December 2010
Objective: To assess the efficiency of mattress-type micro sensitive monitor (MMSM) in sleep monitoring.
Methods: Forty patients diagnosed as obstructive sleep apnea-hypopnea syndrome (OSAHS) by polysomnography (PSG) were randomly chosen, then received MMSM examination within 2 - 5 days. The results of both methods were compared, using the respiratory disturbance index, sleep efficiency, and obstructive factors as indicators.
[Endoscopic surgery using the low-temperature plasma radiofrequency for nasal hemangioma].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
March 2010
Objective: To evaluate the effect of endoscopic surgery using the low-temperature plasma radiofrequency for nasal hemangioma.
Methods: Clinical data of 15 patients treated between October 2007 and October 2009 under endoscopic surgery using the low-temperature plasma radiofrequency were retrospectively studied.
Results: All tumors in 15 patients were completely removed.
[Value of pulse transit time in detecting respiratory drive].
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
March 2009
Objective: To assess the accuracy of pulse transit time (PTT) in classification of apnea events, and collect data for clinical application reference.
Methods: Thirty-two obstructive sleep apnea-hypopnea syndrome (OSAHS) patients included in the research had Polysomnography (PSG), and 10 305 apnea events were recorded. All the events were analyzed by PTT and esophageal pressure (Pes) respectively.