Mosby-S Comprehensive Review Of Dental Hygiene Test With Answers

MOSBY'S COMPREHENSIVE REVIEW
OF DENTAL HYGIENE TEST WITH
ANSWERS




CASE Study A- Use to answer next 8 questions. - correct answer-A 28-year-old client
b b b b b b b b b bb b b b




has a mandibular labial oral piercing. On oral assessment, she exhibits a palpable
b b b b b b b b b b b b b




nodule in the area of the piercing. She states that she noticed the "little lump" about a
b b b b b b b b b b b b b b b b b




b year after the piercing. She received the mandibular labial and tongue piercings approx 2
b b b b b b b b b b b b b




years ago. She doesn't remember biting her lip. She has come to the dentla office
b b b b b b b b b b b b b b b




because she chipped the enamel off of her mandibular central incisor and she is
b b b b b b b b b b b b b b




experiencing hyper sensitivity. b b b




The nodule in the area of the labial piercing is diagnosed as a cyst. A cyst is all of the
b b b b b b b b b b b b b b b b b b b




following EXCEPT:
b b b




a) An abnormal pathologic sac
b b b b




b) A cavity lined by epithelial tissue
b b b b b b




c) Enclosed by connective tissue
b b b b




d) Diagnosed on the basis of histologic appearance and location
b b b b b b b b b




e) Composed entirely of connective tissue - correct answer-E) Composed entirely of
b b b b b b bb b b b b




connective tissue
b b




The client habitually removed the labial piercing druing the first year after she received
b b b b b b b b b b b b b




the piercing. The layer of stratified squamous epithelium that constantly undergoes
b b b b b b b b b b b




mitosis was pushed down into the underlying connective tissue. These epithelial cells
b b b b b b b b b b b b




served as the source of cyst formation. In which layer of the epidermis are cells
b b b b b b b b b b b b b b b




undergoing mitosis most likely to be seen? - correct answer-Stratum basal
b b b b b b b b bb b b

,The sensitivity of the client's mandibular incisors is MOST likely related to: - correct
b b b b b b b b b b b b bb




answer-Fluid entering the dentinal tubules
b b b b b




Of the following tissues, which one or more have nerve innervations?
b b b b b b b b b b




a) dentin and enamel
b b b




b) enamel and cementum
b b b b




c) pulp and periodontal ligament
b b b b




d) dentin, pulp, and periodontal ligament
b b b b b




e) enamel, dentin, pulp, and periodontal ligament - correct answer-C) Pulp and
b b b b b b b bb b b b




periodonal ligament
b b




Because of the proximity of orthoblastic cell bodies to nerve terminal endings in the tooth,
b b b b b b b b b b b b b b




clinical exposure of dentin may result in sensitivity. What is the location of the
b b b b b b b b b b b b b b




odontoblastic bodies? - correct answer-Pulp
b b b bb b




Some loss of enamel is evident on the lingual aspects of the client's maxillary central
b b b b b b b b b b b b b b




incisors because of their contact with the lingual piercing. The tooth structure loss that
b b b b b b b b b b b b b b




occurs from pathologic wear of the teeth by foreign substance is called: - correct answer-
b b b b b b b b b b b b b bb b




Abrasion

Bone loss is noted on the periapical radiograph of the mandibular incisors. The crest of
b b b b b b b b b b b b b b




the alveolar bone is usually apical to the cemento-enamel junction (CEJ) by: - correct
b b b b b b b b b b b b b bb




answer-0.75 to 1.49 mm
b b b b




T or F: When a cyst shows up radiographically, it has a well-defined border; this cyst of
b b b b b b b b b b b b b b b b




the mandibular labial tissue will show up radiographically. - correct answer-The first
b b b b b b b b b bb b b




statement is true, the second is false
b b b b b b b




Case Study B- use for the next 14 questions - correct answer-A 48-year-old woman is
b b b b b b b b b bb b b b b




being treated by the dental hygienist for the first time. She states that she is in very good
b b b b b b b b b b b b b b b b b b




health. Clinical examination reveals generalized bleeding of the gingiva with
b b b b b b b b b b




generalized rolled margins, bulbous interdental papillae, and no signs of inflammation of
b b b b b b b b b b b b




the attached gingiva. A 1mm zone of attached gingiva on the facial of the mandibular
b b b b b b b b b b b b b b b




central incisors and a class I furcation on the facial of tooth #30 are noted. She has a 7mm
b b b b b b b b b b b b b b b b b b b




clinical attachment loss reading on the facial of #30. Radiographs reveal the furcation,
b b b b b b b b b b b b b




but a radiopacity that is continuous with the coronal enamel and extends into the
b b b b b b b b b b b b b b




furcation is noted. NO other attachment loss or bone loss is noted throughout the mouth.
b b b b b b b b b b b b b b b




Occlusal evaluation reveals no premature contacts or signs of tooth wear.
b b b b b b b b b b b




The tissue lining of an unhealthy gingival sulcus consists of: - correct answer-
b b b b b b b b b b bb b




Nonkeratinized epithelium with rete pegs b b b b




The bottom of the gingival sulcus is marked by the: - correct answer-Junctional
b b b b b b b b b b bb b




epithelium
b




Which of the following have little or no keratinization?
b b b b b b b b




a) attached gingiva
b b




b) interdental papilla
b b




c) lingual papilla
b b




d) hard palate
b b

, e) sulcular epithelium - correct answer-E) Sulcular epithelium
b b b bb b b b




What does bleeding caused by probing indicate? - correct answer-Ulceration of
b b b b b b b bb b b




crevicular epithelium
b b




Which of the following tissue changes result in erythematious gingiva?
b b b b b b b b b




a) increased keratinization
b b




b) presence of inflammatory cells
b b b b




c) increased vascularization
b b




d) increased production of collagen
b b b b




e) necrosis of the epithelium - correct answer-C) Increased vascularization
b b b b b bb b b b




What type of connective tissue underlies the epithelium of the gingiva? - correct answer-
b b b b b b b b b b b bb b




Fibrous

In gingivitis, poor tissue tone is caused by: - correct answer-Destruction of collagen
b b b b b b b b bb b b b




fibers
b




The MOST likely periodontal diagnosis for this client would be:
b b b b b b b b b b




a) generalized severe chronic periodontitis
b b b b




b) generalized severe chronic gingivitis
b b b b




c) generalized moderate chronic gingivitis with localized area of severe chronic
b b b b b b b b b b




periodontitis
b




d)generalized moderate chronic periodontitis with localized severe chronic periodontitis
b b b b b b b b




e) generalized mild chronic periodontitis - correct answer-c) generalized moderate
b b b b b bb b b b




chronic gingivitis with localized area of severe chronic periodontitis
b b b b b b b b b




The possible cause of the furcation involvement on the facial area of #30 is:
b b b b b b b b b b b b b b




a) enamel projection onto the root surface
b b b b b b




b) Palatao-gingival groove
b b b




c) occlusal trauma
b b




d) frena pull
b b




e) none of the above; no furcation involvement is noted radiographically - correct
b b b b b b b b b b b bb




answer-a) enamel projection onto the root surface
b b b b b b b




Definitive diagnosis of furcation involvement on the facial area of #30 is:
b b b b b b b b b b b b




a) clinical probing
b b




b) reviewing the client's history
b b b b




c) checking the mobility of the tooth
b b b b b b




d) inspecting the radiographs of the area - correct answer-a) Clinical probing
b b b b b b b bb b b b




Enamel projections projections on the root surface are attributed to the differentiation of:
b b b b b b b b b b b b b




a) cementoblasts
b




b) enamel spindles
b b




c) primary enamel cuticle
b b b




d) enamel tufts
b b




e) Hertwig's epithelial root sheath - correct answer-e) Hertwig's epithelial root sheath
b b b b b bb b b b b b




Hertwig's epithelial root sheath is derived from the;
b b b b b b b b




a) inner enamel epithelium
b b b