Exam 19: Dental Lamina and Enamel Organ

The cap stage begins when the concavity of the tooth buds becomes slightly concave.

The clefting that occurs in the thickened vestibular lamina eventually becomes a mucogingival groove.The vestibular lamina is a thickening of oral epithelium in a lingual direction.

MATCHING An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation. -Successional lamina

The cells of the inner enamel epithelium (IEE)are structurally similar to the cells of the outer enamel epithelium (OEE)because they both originate from the basal layer of the oral epithelium.

The dental sac is composed of several layers of flat mesodermal cells that partially surround the dental papilla and enamel organ.The dental sac is another name for the dental lamina.

MATCHING An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation. -Dental sac

MATCHING An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation. -Vestibular lamina

Premolars are successional because they develop from a posterior growth of the dental,or general,lamina.

At about the sixth embryonic week,there is a continued thickening in the dental lamina.These localized thickenings correspond to the positions of the 20 teeth of the future primary dentition.

The first stage of development of enamel organ is the cap stage.

MATCHING An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation. -Enamel organ

Without thickening of the vestibular lamina in an occlusal direction the vestibule would not exist because clefting or splitting of the epithelium would not occur.

The stratum intermedium develops during which stage?

MATCHING An understanding of the formation of the dental lamina and enamel organ provides dental professionals with a foundation in embryology.Match each descriptive term with its appropriate anatomic formation. -Dental papilla

The cells between the dental papilla and the outer enamel epithelium (OEE)compose the stellate reticulum.Originating from deep layers of the oral epithelium,cells of the stellate reticulum are mesenchymal in origin.

The outermost part of the structure of the cap stage is the outer enamel epithelium (OEE).This tissue,a continuation of the basal layer of oral epithelium,is composed of predominately pyramidal and conical-shaped cells.

The dental lamina thickens first at the anterior midline.

The successional lamina forms all permanent teeth EXCEPT for one type.Which type is the EXCEPTION?

Skin,hair,enamel,and cementum can be adversely affected by ectodermal dysplasia because this condition causes poor development of structures arising from ectoderm.

Enamel organ originates from the