CRNA Opportunities Available in Dallas-Fort Worth, Texas. CRNA (Pediatric Dental + OBA). Case mix: Pediatric Dental (minimum ~3 days/week), adult dental and multi-specialty office-based settings (GI, ENT, gynecology/fertility, plastics). Cases typically begin between 7:00–8:00 AM. Most days conclude between 3:00–5:00 PM.