CASE #3: Yоu аre treаting yоur first periоdontаlly involved patient who has generalized recession and 4-6mm probe depths. You are completing a periodontal maintenance appointment and are navigating all of the root surfaces and subgingival calculus that the patient presents with. You are using the explorer to help you determine how your scaling is going and are treatment this patient by scaling the teeth in one quadrant at a time since this patient is more involved. Use this information to answer the following questions: QUESTION: Which is the correct positioning when exploring the proximal surfaces of the posterior teeth?