Class III malocclusion associated with posterior crossbite, anterior open bite pattern with asymmetric occlusion in adults can be a challenging orthodontic problem, especially for the nonsurgical treatment. Skeletal C...Class III malocclusion associated with posterior crossbite, anterior open bite pattern with asymmetric occlusion in adults can be a challenging orthodontic problem, especially for the nonsurgical treatment. Skeletal Class III anteroposterior discrepancies in adult patients are generally managed either by surgical-orthodontic treatment or by orthodontic camouflage through dentoalveolar compensation. Although correction with surgery may be the most effective and stable way, many patients refuse surgical treatment plan because of the costs and traumas it may bring. This case report describes the successful use of TADs with expansion auxiliary wire to treat a 24-year-old man with skeletal class III malocclusion, posterior crossbite, anterior open-bite and asymmetric occlusion, mild upper and lower dental spacing and a chief manifestation of anterior crossbite. The patient refused surgery. A treatment plan was formulated consisting of using auxiliary expansion wire to expand the maxillary arch, 8 mm mini-screws between the roots of the mandibular canines and first premolars, preadjusted edgewise brackets to align the teeth, Class III and asymmetric elastics to correct the canines, premolars, and molars relationship and midline deviation, reverse curve of the nickel-titanium wire combined with anterior vertical elastics to intrude molars and correct the anterior open-bite. In this case, without going through surgery, the posterior cross-bite was corrected, and ideal overjet and overbite relationships, midline coincidence and functional occlusion were all achieved. Satisfactory occlusal, functional, esthetic and stable results were obtained.展开更多
在道路微观油耗模型中,基于功率需求类的参数因其与油耗之间的高度相关性,常被用来描述车辆运行特征。VSP(Vehicle Specific Power)和Ln(TAD)(Natural Logarithm of the Total Absolute Difference of Vehicle Instantaneous Speed)都...在道路微观油耗模型中,基于功率需求类的参数因其与油耗之间的高度相关性,常被用来描述车辆运行特征。VSP(Vehicle Specific Power)和Ln(TAD)(Natural Logarithm of the Total Absolute Difference of Vehicle Instantaneous Speed)都是常用的基于功率需求类的参数,有必要对基于VSP和Ln(TAD)的微观油耗模型的准确性和特征进行对比。利用收集到的实际逐秒速度数据和油耗数据,分别建立基于VSP和Ln(TAD)的轻型车微观油耗模型,以及平均行程速度与VSP和Ln(TAD)的分布模型,,并将利用模型得到的油耗量和油耗因子测算值与实际值进行比较,归纳出这2种微观油耗模型的特征和规律。展开更多
文摘Class III malocclusion associated with posterior crossbite, anterior open bite pattern with asymmetric occlusion in adults can be a challenging orthodontic problem, especially for the nonsurgical treatment. Skeletal Class III anteroposterior discrepancies in adult patients are generally managed either by surgical-orthodontic treatment or by orthodontic camouflage through dentoalveolar compensation. Although correction with surgery may be the most effective and stable way, many patients refuse surgical treatment plan because of the costs and traumas it may bring. This case report describes the successful use of TADs with expansion auxiliary wire to treat a 24-year-old man with skeletal class III malocclusion, posterior crossbite, anterior open-bite and asymmetric occlusion, mild upper and lower dental spacing and a chief manifestation of anterior crossbite. The patient refused surgery. A treatment plan was formulated consisting of using auxiliary expansion wire to expand the maxillary arch, 8 mm mini-screws between the roots of the mandibular canines and first premolars, preadjusted edgewise brackets to align the teeth, Class III and asymmetric elastics to correct the canines, premolars, and molars relationship and midline deviation, reverse curve of the nickel-titanium wire combined with anterior vertical elastics to intrude molars and correct the anterior open-bite. In this case, without going through surgery, the posterior cross-bite was corrected, and ideal overjet and overbite relationships, midline coincidence and functional occlusion were all achieved. Satisfactory occlusal, functional, esthetic and stable results were obtained.
文摘在道路微观油耗模型中,基于功率需求类的参数因其与油耗之间的高度相关性,常被用来描述车辆运行特征。VSP(Vehicle Specific Power)和Ln(TAD)(Natural Logarithm of the Total Absolute Difference of Vehicle Instantaneous Speed)都是常用的基于功率需求类的参数,有必要对基于VSP和Ln(TAD)的微观油耗模型的准确性和特征进行对比。利用收集到的实际逐秒速度数据和油耗数据,分别建立基于VSP和Ln(TAD)的轻型车微观油耗模型,以及平均行程速度与VSP和Ln(TAD)的分布模型,,并将利用模型得到的油耗量和油耗因子测算值与实际值进行比较,归纳出这2种微观油耗模型的特征和规律。
