[2025-09-30T06:01:29.533816] [QUERYOME] Starting research for query 521: 'Instructions: 
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer. 

Question:
Incidence of 2 canals in mandibular incisors is 

Options:
{'A': '3 - 12%', 'B': '12 - 20%', 'C': '20 - 41%', 'D': 'Less than 3%'}'
[2025-09-30T06:01:29.582443] [PI] Starting research for query: 'Instructions: 
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer. 

Question:
Incidence of 2 canals in mandibular incisors is 

Options:
{'A': '3 - 12%', 'B': '12 - 20%', 'C': '20 - 41%', 'D': 'Less than 3%'}'
[2025-09-30T06:01:29.584090] Saving text to bench_final/run1/medmcqa/medmcqa_520/pi_initial_prompt.txt
[2025-09-30T06:01:29.588951] [PI] Calling o3 for initial analysis...
[2025-09-30T06:01:36.871308] [PI] Reasoning iteration 1
[2025-09-30T06:01:36.873771] [PI reasoning] **Determining canal incidence**

I’m looking into the incidence of two canals in mandibular incisors, which in the endodontics field usually ranges from 10% to 30%. Studies show a presence of two canals in about 11-45% of cases. The 26% figure from Blum seems reliable, while another commonly referenced measure is 41.4%. Given the options presented, option C (20-41%) seems to be the best choice, as it fits within the common range cited in textbooks.
[2025-09-30T06:01:36.875705] [PI] Executing function call 1: hybrid_search
[2025-09-30T06:01:36.878158] [PI] Function arguments: {'query': 'incidence of two canals in mandibular incisors', 'k': 10, 'faiss_weight': 0.6, 'bm25_weight': 0.4, 'use_rrf': True}
[2025-09-30T06:01:36.879892] Saving JSON to bench_final/run1/medmcqa/medmcqa_520/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-09-30T06:02:17.512470] [PI] Function hybrid_search executed successfully
[2025-09-30T06:02:17.517123] Saving JSON to bench_final/run1/medmcqa/medmcqa_520/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-09-30T06:02:17.526193] [PI] Continuing reasoning with 1 function responses...
[2025-09-30T06:02:26.923096] [PI] Reasoning iteration 2
[2025-09-30T06:02:26.924752] [PI reasoning] **Evaluating anatomical prevalence**

I'm considering the prevalence rates from various CBCT studies, which show a range of 18-40%. If the question references dental anatomy exams, the typical figure might be around 41%. Textbooks like Ingle's Endodontics mention two canals in mandibular incisors at that rate. I see that evidence from studies like Shemesh 2018 and Zhang 2014 places the incidence within a range of 20-41%. So, I'll conclude that this range is indeed appropriate.
[2025-09-30T06:02:26.927290] [PI] No function calls found in response
[2025-09-30T06:02:26.929067] [PI] No more function calls - research complete
[2025-09-30T06:02:26.930819] Saving text to bench_final/run1/medmcqa/medmcqa_520/pi_final_answer.txt
[2025-09-30T06:02:26.937288] [QUERYOME] Query completed successfully
