Implant restorations have become a primary treatment option for the replacement of congenitally missing lateral incisors. The central incisor and canine often erupt in less than optimal positions adjacent to the edentulous lateral incisor space, and therefore preprosthetic orthodontic treatment is frequently required. Derotation of the central incisor and canine, space closure and correction of...

A ten year old boy came with a chief complaint of unerupted permanent maxillary right central incisor. Deciduous right central and lateral incisors were retained. Radiographic examination revealed an inverted and dilacerated mesiodens with the root bent over the incisal surface of the right central incisor preventing its eruption. An occlusal radiograph and radiographs using shift cone techniqu...

Failure of eruption of primary teeth can be considered rare, especially in maxillary anterior teeth. The problem can be either mechanical obstruction of eruption or a failure of the eruption mechanism. This case report presents failure of eruption of the maxillary right deciduous central incisor in a 4-year-old girl. The unerupted primary tooth was removed surgically. The histological finding r...

Permanent mandibular central incisor is rarely affected by tooth shape anomalies of crown and root. Co-occurrence of multiple anomalies in a permanent mandibular central incisor is extremely rare. This paper reports an unusual concurrent combination of multiple dental anomalies affecting both the crown and root of a permanent mandibular left central incisor - talon cusp, dens invaginatus, short...

The present case report describes the interdisciplinary management of a patient with increased overbite and overjet, Angle’s Class Ⅰ malocclusion, bilateral agenesis mandibular central incisors microdontia upper lateral incisors. 18-year-old female had convex profile, maxillary dentoalveolar protrusion mild spacing in anterior region. Therefore, treatment consisted fixed appliance therapy, foll...

The generated torque ripple in switched reluctance motors (SRM) can be considered as one of the major disadvantages of the motor. It is mainly due to frequent switching of phases for rotation of the motor and changes of the air gap length between the rotor and stator teeth. It decreases the average developed torque, diminish the efficiency, causes noise and vibration in the motor. So, in order ...

the anatomic anomalies detection is important for an attentive clinician. asuccessful treatment of an endodontically involved tooth should make itfunctional and aesthetically acceptable for the patient. the following articlepresented a case of gemination and the endodontic, prosthetic and periodontaltreatments which were done to keep a complicated tooth in aesthetic zone

o bjectives: caries and dental trauma are common reasons for primary anterior teeth restorations in children. this non-control clinical trial was designed to eva- luate crown restorations reinforced with a sectioned file post for the restoration of severely damaged primary maxillary incisors. materials and methods: thirty-eight primary maxillary incisors of 12 children (3-5 years old) with earl...

in this research, the total torque input and output shafts were subjected to are used to formulate twodifferential equations using applied dynamics and fluid mechanics. the equations show that the input andoutput torques are a function of the constant geometrical parameters of a torque converter, includinginternal and external diameters of vanes, angle and length of vanes, cross section area be...

This paper analyzes an induction motor with high temperature superconducter (HTS) coated slotted solid rotor. By slotting the solid rotor, the electromagnetic torque near synchronous speed will increase but the starting torque will decrease. To improve starting torque, rotor slots are coated with HTS materials. Using HTS material vary the rotor resistance to great extends in starting step and t...