The canines (the fangs) are the “rogues” during human tooth development. Canines as a tooth type have the longest eruption time (from 3 months to 11 years). The are two possibilities in which the canines can destroy the permanent incisors: Sudden vertical growth of the face creates space above the maxillary incisors permitting the […]
The photograph below demonstrates the result of insufficient bone to accommodate the correct eruption of the permanent teeth. As a result of a lack of sufficient space, teeth may surface randomly even if they are not located on the bony ridge. Previously this type of crowding would mandate extracting permanent teeth to place the teeth on the ridge […]
Severe crowding of teeth, is the result of the lack of bony arch to accommodate the permanent teeth as they erupt. If teeth lack space, they either become impacted or erupt off the arch. When teeth erupt off the arch they position themselves in a region of the gum that doesn’t protect the bone. This […]
Animal models of primary palate development have provided a great deal of information relative to both normal and abnormal development. The murine model has been particularly useful, because several strains have relatively high frequencies of spontaneous cleft lip with our without cleft palate, and other have no spontaneous frequency of CL(P). To read more, click […]
Studies of orthopedic expansion of cranial sutures have carefully documented that the biologic response is a widening of the suture followed by the production of connective tissue components (Hinrich- son and Storey, Storey, Cleall and associates, Murray and Cleall Ten Cate, Freeman, and Dickinson). By this remodeling activity, the suture re-establishes a configuration similar to […]
This study examined 63 human fetuses, ranging in size from 4.5 to 255 mm crown-rump, to follow the embryological development of the temporomandibular joint. Sagittal, coronal, and transverse sections of the joint region were prepared and stained either in Milligan’s trichrome, a connective tissue stain, or in hematoxylin and eosin. The results of the study […]
The biological response to the repair of palatal clefts has been evaluated principally by monitoring craniofacial growth. Little is known about the regenerative ability of the repaired palate. In the present study, 18 Beagle pups (51 to 58 days old) were assigned to one of three groups: (1) control group, having no surgery; (2) cleft […]
Primary palatogenesis involves an intricate array of events. Cell migration, proliferation, differentiation, programmed death, and fusion occur. Prior to fusion, the morphology of the epithelium undergoes marked changes. Epithelial projections form and extend across the fusion site attaching by filopodia to the opposite prominenece. By appearance, the epithelium plays a critical role in facial development. In order […]
Orthodontic tooth movement is dependent on the induction of a bony remodeling response by a mechanical force. Although sophisticated advances have been made in force delivery systems, relatively little is known to explain how changes in the applied forces affect the biologic system. For many years knowledge of the biologic response to an orthodontic force […]
Proper treatment planning is essential for successful outcomes, particularly with interdisciplinary dentofacial therapy (IDT) cases of skeletally mature patients who require orthodontic tooth movement. As such, pretreatment assessment of the periodontium is commonly evaluated by clinical measures and conventional two-dimensional radiog raphic review. In IDT cases, particularly those involving the worn or malposed dentition, positioning […]
