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Identify the feature below that are the collagen fibers from the periodontal ligament (PDL) partially inserted into both cementum AND bone.   

Scenario C On examination, it is noted that a client has gingival recession around the maxillary premolars and canine areas, with slight root surface abrasion. The gingiva is firm and stippled. The probing depths are 2-3 mm, with no bleeding on probing. The zone of attached gingiva is 1mm in these areas. The client’s chief complaint is “sensitivity when I eat and drink anything sweet or cold.” In the medical history it is noted the patient has a history of seizures. Root surface abrasion in this client began with the wearing away of what tooth substance?

Scenario B An 18-year-old client has a healthy history with no significant findings. On examination of the dentition, findings reveal pitting of the enamel on the first molars, central incisors, laterals, and canines. In some areas these pits are stained. The client states that this pitting has always been present. The client has developed a carious lesion in a pit that appears at the incisal border of the cingulum of the right maxillary lateral incisor. An invagination of the enamel into the pulp cavity of this lateral incisor is noted. This condition MOST likely occurred during?

The first dentin that is formed, has the largest collagen fibers that run perpendicular to the DJE, and higher levels of mineralization is called:

Scenario C On examination, it is noted that a client has gingival recession around the maxillary premolars and canine areas, with slight root surface abrasion. The gingiva is firm and stippled. The probing depths are 2-3 mm, with no bleeding on probing. The zone of attached gingiva is 1mm in these areas. The client’s chief complaint is “sensitivity when I eat and drink anything sweet or cold.” In the medical history it is noted the patient has a history of seizures. The dental care plan for this client includes a connective tissue graft. This procedure involves harvesting connective tissue from the client’s hard palate. This connective tissue simulates the growth of the same type of epithelial tissue that previously covered it. The graft area will be covered with what type of epithelial tissue?

Identify the histologic feature that corresponds to the birth of the individual. Note: WHITE arrow   

La distancia entre el poeta y la persona amada es comparada con la noche oscura y fría.

Scenario B An 18-year-old client has a healthy history with no significant findings. On examination of the dentition, findings reveal pitting of the enamel on the first molars, central incisors, laterals, and canines. In some areas these pits are stained. The client states that this pitting has always been present. The client has developed a carious lesion in a pit that appears at the incisal border of the cingulum of the right maxillary lateral incisor. An invagination of the enamel into the pulp cavity of this lateral incisor is noted. Enamel is derived from which of the following embryonic layers?

The function of the apical group of fibers is:  

The function of the oblique group of fibers is: