Objective:To study the treatment effects of 12 cases of Class II division 1 malocclusion using Bionator appliances. Methods:12 cases of Class II division 1 malocclusion were selected and treated with Bionator appliances. The changes of teeth, skeletal and facial appearance were analyzed by cephalometry before and after the treatment of Bionator appliances. Results:①Bionator appliances can hardly restrain the maxillary growth. ②Bionator appliances can promote the mandibular ramus and body growth and improve the soft tissue profile. ③Bionator appliances can reduce the labial inclination of upper incisors of Class II division 1 malocclusion and can increase the height of dental alveolar of upper and lower jaw. Conclusion:In Class II division 1 malocclusion treatment, Bionator appliances can obtain satisfactory effects.

BACKGROUND:Many clinical cases show that micro-implant teeth in the orthodontic treatment are effective with strong resistance.OBJECTIVE:To compare the effectiveness of micro-implant headgear and mouth external devices as a strong orthodontic treatment for front teeth with Angle class Ⅱ and Ⅰmalocclusion.DESIGN,TIME AND SETTING:Case comparative analysis by X-ray was performed at Department of Orthodontics,Hospital of Guilin Medical College from June 2003 to October 2007.PARTICIPANTS:Thirty bimaxillary protrusion patients were divided into two groups:16 cases were treated with micro-implant and the others with extraoral J hook.METHODS:In the anti-implant support group,between the alveolar attack of the upper bilateral first permanent molars and premolars second intervals,micro-titanium alloy implant was implanted as anchorage off space.The implants were early used to do canine backward ligation,after the entire arch-lateral incisor teeth in the upper far in the hook traction devices,space between the implants and hook was closed using a flexible traction.In extraoral J-hook group,J-hook-class Ⅱ traction and headgear extraoral J hook slide were used to strengthen posterior teeth anchorage and close space.The traditional method was used to strengthen support on the lower first and second permanent molars on the upper band combined with support on face-bow lips and lower-profile.Preoperative and postoperative cranial lateral films were taken.MAIN OUTCOME MEASURES:To compare the line of cephalometric X-ray in two groups before and after treatment to observe the change in the location of the first molar.The relation changes of anterior teeth review of coverage and class Ⅱ molar,and improvement of facial convex were observed after treatment.RESULTS:Tissues around the implant were normal,and two cases of micro-implant loosed,which were fixed following re-implantation.Orthodontic treatment of the two groups established the normal relation between over bite and overjet of the front teeth,and corrected class Ⅱmolar relations,with stable location of the first molar,endoduction of upper front teeth and decrease in facial convex.Cephalometric X-ray results showed that in the implant group,the upper first molar advanced,whose crown was forward 0.86 mm,margin of incisors to 6.17 mm;while in the extraoral J hook group,the molars advanced 2.36 mm,and margin of incisors to 4.51 mm.The differences between two groups were significant(P

OBJECTIVEThis study aims to explore the method that uses primary tumor contralateral facial artery musculocutaneous (FAMM) flap to reconstruct defects of the tongue and floor of mouth.

METHODSSix cases were selected for the use of primary tumor contralateral FAMM flap to reconstruct tongue and floor of mouth defects after tumor resection.

RESULTSThe FAMM flap of the six cases had a long pedicle that could reach the contralateral tongue and floor of mouth. All flaps were intact until post-operation. All patients experienced post-operation complications, such as temporary facial tension and limited mouth opening, which improved after 3 months. Half a year later, the flaps still did not show signs of shrinking.

CONCLUSIONFeatures of the primary tumor contralateral FAMM flap include the tissue-like material provided for reconstructing tongue or floor of mouth defects, easy acquisition, and high survival rate with minimal donor site morbidity. As such, it is an ideal material for repairing tongue and floor of mouth defects.

Arteries ; Face ; Humans ; Mouth Neoplasms ; Myocutaneous Flap ; Reconstructive Surgical Procedures ; Surgical Flaps ; Tongue ; Tongue Neoplasms

Objective:To analyze the results of surgical treatment in patients with obstructed total anomalous pulmonary venous connection.Methods:Inclusion criteria: Patients with obstructed total anomalous pulmonary venous connection, who underwent surgical treatment in our hospital between December 2012 to January 2018. Exclusion criteria: (1)With complicated malformations, such as single ventricle and visceral inversion; (2)The maximum flow velocity of pulmonary vein was less than 1.2 m/s; (3)Had not underwent surgery. 57 patients[33 males and 24 females, age: (3.2±1.7) months, weight: (5.0±0.9) kg] were enrolled. There were four anatomical subtypes: supracardiac type(n=30), cardiac type(n=16), infracardiac type(n=5), and mixed type(n=6). Patients were followed up after operation.Results:During the follow-up of(52±21) months, 8 cases(14.0%, 8/57) died postoperatively. Postoperative pulmonary vein stenosis was present in 7 patients(12.3%, 7/57). The mortality of patients with postoperative pulmonary vein stenosis(57.1%, 4/7) was significantly higher than that of patients without postoperative pulmonary vein stenosis(8.0%, 4/50).Conclusion:The results of surgical treatment in patients with obstructed total anomalous pulmonary venous connection were encouraging, however, recurrent pulmonary venous stenosis still should be taken care.

Objective:To analyze the risk factors for postoperative pulmonary venous obstruction after correction of total anomalous pulmonary venous connection(TAPVC).Methods:We retrospectively reviewed all patients undergoing operative repair of TAPVC in our institution from December 2013 to January 2018. Patients with functionally univentricular circulations or atrial isomerism were excluded. Patients were divided into two groups according to whether there was pulmonary vein obstruction. The clinical variables of the two groups were compared. Variables for the multivariable analysis were chosen if there was statistical significance on univariable analysis.Results:145 patients were included, 91(63%) males, aged 4(2, 8)months and weight 5.5(4.5, 7.5)kg. Mean follow-up interval was(51±23) months. Postoperative obstruction developed in 27 patients(18.6%). The differences of anatomic type[supracardiac 18(67%) vs.59(50%), cardiac 4(15%) vs. 50(42%), infracardiac 3(11%) vs. 1(1%), mixed 2(7%) vs. 8(7%), P=0.003], preoperative obstruction[yes 19(70%) vs. 37(31%), no 8(30%) vs. 81(69%), P<0.001], associated cardiac lesions[yes 13(48%) vs. 27(23%), no 14(52%) vs. 91(77%), P=0.008] and bypass time[109(89, 129)min vs. 88(70, 110)min, P=0.002] between two groups were statistical significant. A multivariable model showed preoperative obstruction( P<0.001) and bypass time( P=0.009) were associated with postoperative obstruction. Conclusion:The incidence of pulmonary vein obstruction after correction of TAPVC was still high. If there was preoperative obstruction, or the bypass time was too long during operation, the surveillance of pulmonary vein obstruction should be strengthened after operation.