CASE STUDY Monica Is a 38-Year-Old Woman Who Visits the Office as Office

CASE STUDY
Monica is a 38-year-old woman who visits the office as a new client for an oral assessment and necessary care.Her health history indicates that she is in good health.Monica reports that she brushes three times per day and flosses every night,but her gums bleed every time she flosses.On completion of the full mouth radiographs,dentist's examination,and diagnosis,the dental hygienist completes the periodontal assessment and dental hygiene care plan.Findings include generalized,papillary and marginal gingival erythema;edema;and increased bleeding on probing at all proximal surfaces,especially teeth 8 and 9.No visible supragingival calculus is observed,but there is flat,easily explorable subgingival calculus present on all proximal surfaces,and there are rings of subgingival calculus in 4-mm pocket depths on the lingual surfaces of the mandibular molars,especially teeth 30 and 31.Furthermore,tooth 14 has facial and lingual recession of 4 mm,circumferential 3-mm pocket depths,a Class I mesial furcation,and cementum that is grainy and soft.
-Access to and instrumentation on the lingual aspect of teeth 30 and 31 is complicated by what anatomic feature?

A) Mandibular posterior crowns are inclined more toward the lingual side than the roots,making access more difficult.
B) Mandibular posterior crowns are inclined more toward the facial side than the roots,making access more difficult.
C) The mandibular first molar mesial furcal concavity makes access more difficult.
D) The mandibular second molar mesial concavity makes access more difficult.