94724

Laron syndrome is a rare genetic disorder characterized by insensitivity to growth hormone due to mutations in the GH receptor, leading to proportionate dwarfism and characteristic facial features.

39814

Centric relation is best defined as the relation of the mandible to the maxilla when the condyles are in their most posterior position in the glenoid fossae.

74555

An important advantage of the I-bar retainer in the RPI concept is that since the tooth contour is not altered, food accumulation against the tooth surface is minimized. The I-bar approaches the undercut from the gingival direction without requiring tooth modification, maintaining natural contours that promote self-cleansing.

53180

67144

The primary function of the neck in a sperm cell is to connect the head and tail of the sperm, facilitating movement and energy transfer.

47202

Cephalometric analysis is a comprehensive tool used in orthodontics to evaluate dental arch symmetry, dental/skeletal relationships, and treatment planning.

45519

A unilateral cleft lip results from the failure of the medial nasal prominence and the maxillary prominence to fuse during embryonic development. This fusion normally occurs around weeks 4 to 7 of gestation and is a critical step in the formation of the upper lip and primary palate.

74469

The sealability with either vertical or lateral condensation techniques depends on the shape of the prepared canal. This is correct because: 1) Round, tapered canals are ideal for both techniques, 2) Oval or irregular canals may be better filled with vertical condensation, 3) Lateral condensation works best in canals with proper taper and resistance form, 4) Vertical condensation can adapt better to canal irregularities, 5) Neither technique is universally superior - success depends on canal anatomy and operator skill. Proper canal preparation is more important than the specific obturation technique chosen.

83886

Frankel III appliance is used for Class III malocclusion to promote forward growth of the mandible and correct the skeletal discrepancy.

76415

Huntington's disease has a prevalence of approximately 10 per 100,000 people in the general population. It is more common in certain ethnic groups, particularly those of Western European descent.