[2025-10-02T06:37:33.333420] [QUERYOME] Starting research for query 2133: '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:
Patient's cross infection with bite block of orthopantamograph machine is prevented by

Options:
A. Cover with autoclaved cloth with each use
B. Using disposable bite blocks
C. Clean with 5.25% sodium hypochlorite in each patient
D. Cover with impervious barrier'
[2025-10-02T06:37:33.407961] [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:
Patient's cross infection with bite block of orthopantamograph machine is prevented by

Options:
A. Cover with autoclaved cloth with each use
B. Using disposable bite blocks
C. Clean with 5.25% sodium hypochlorite in each patient
D. Cover with impervious barrier'
[2025-10-02T06:37:33.411277] Saving text to bench_final/run1/medmcqa/medmcqa_3693/pi_initial_prompt.txt
[2025-10-02T06:37:33.430611] [PI] Calling o3 for initial analysis...
[2025-10-02T06:37:37.814006] [PI] Reasoning iteration 1
[2025-10-02T06:37:37.816619] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:37:37.818400] [PI] Function arguments: {'query': 'panoramic radiography bite block infection control disposable bite blocks', 'k': 10, 'faiss_weight': 0.7, 'bm25_weight': 0.3, 'use_rrf': True}
[2025-10-02T06:37:37.821884] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-10-02T06:37:39.935859] [PI] Function hybrid_search executed successfully
[2025-10-02T06:37:39.937846] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-10-02T06:37:39.947526] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:37:47.277216] [PI] Reasoning iteration 2
[2025-10-02T06:37:47.278844] [PI reasoning] **Reviewing infection control measures**

I'm looking into infection control for OPG bite blocks. There's no specific article on it, but general guidelines indicate using disposable bite blocks or impervious barriers. Autoclaving cloth covers isn't effective, and using sodium hypochlorite might damage equipment and isn't safe for intraoral implements. It's usually recommended to protect the portion inserted in the patient's mouth with disposable plastic barriers. Some OPG units even have disposable plastic sticks. Many radiology infection control guidelines support using disposable bite guides or barriers after each patient.
[2025-10-02T06:37:47.281923] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:37:47.283707] [PI] Function arguments: {'query': 'panoramic bite block disposable plastic cover barrier', 'k': 10, 'faiss_weight': 0.7, 'bm25_weight': 0.3, 'use_rrf': True}
[2025-10-02T06:37:47.286571] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_2_tool_call_2_hybrid_search.json
[2025-10-02T06:37:48.513654] [PI] Function hybrid_search executed successfully
[2025-10-02T06:37:48.516327] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_2_tool_result_2_hybrid_search.json
[2025-10-02T06:37:48.525930] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:37:54.283478] [PI] Reasoning iteration 3
[2025-10-02T06:37:54.285917] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:37:54.287987] [PI] Function arguments: {'query': 'orthopantomograph bite block disposable', 'k': 10, 'faiss_weight': 0.8, 'bm25_weight': 0.2, 'use_rrf': True}
[2025-10-02T06:37:54.290857] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_3_tool_call_2_hybrid_search.json
[2025-10-02T06:37:55.254031] [PI] Function hybrid_search executed successfully
[2025-10-02T06:37:55.256453] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_3_tool_result_2_hybrid_search.json
[2025-10-02T06:37:55.265944] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:38:02.013545] [PI] Reasoning iteration 4
[2025-10-02T06:38:02.016224] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:38:02.018324] [PI] Function arguments: {'query': 'impervious barrier bite block panoramic', 'k': 10, 'faiss_weight': 0.7, 'bm25_weight': 0.3, 'use_rrf': True}
[2025-10-02T06:38:02.021141] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_4_tool_call_2_hybrid_search.json
[2025-10-02T06:38:03.157879] [PI] Function hybrid_search executed successfully
[2025-10-02T06:38:03.160394] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_4_tool_result_2_hybrid_search.json
[2025-10-02T06:38:03.166335] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:38:12.667629] [PI] Reasoning iteration 5
[2025-10-02T06:38:12.670514] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:38:12.672292] [PI] Function arguments: {'query': 'panoramic biteblock barrier semicritical device cannot be heat sterilized cdc 2003 guidelines', 'k': 10, 'faiss_weight': 0.8, 'bm25_weight': 0.2, 'use_rrf': True}
[2025-10-02T06:38:12.676480] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_5_tool_call_2_hybrid_search.json
[2025-10-02T06:38:13.487618] [PI] Function hybrid_search executed successfully
[2025-10-02T06:38:13.490432] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_5_tool_result_2_hybrid_search.json
[2025-10-02T06:38:13.497891] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:38:23.499622] [PI] Reasoning iteration 6
[2025-10-02T06:38:23.510770] [PI] Executing function call 1: hybrid_search
[2025-10-02T06:38:23.512457] [PI] Function arguments: {'query': 'panoramic bite guide protected with impervious barrier Kohn 2003', 'k': 10, 'faiss_weight': 0.7, 'bm25_weight': 0.3, 'use_rrf': True}
[2025-10-02T06:38:23.514245] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_6_tool_call_2_hybrid_search.json
[2025-10-02T06:38:25.192388] [PI] Function hybrid_search executed successfully
[2025-10-02T06:38:25.194616] Saving JSON to bench_final/run1/medmcqa/medmcqa_3693/pi_iteration_6_tool_result_2_hybrid_search.json
[2025-10-02T06:38:25.208588] [PI] Continuing reasoning with 1 function responses...
[2025-10-02T06:38:36.438481] [PI] Reasoning iteration 7
[2025-10-02T06:38:36.441094] [PI] No function calls found in response
[2025-10-02T06:38:36.442944] [PI] No more function calls - research complete
[2025-10-02T06:38:36.445458] Saving text to bench_final/run1/medmcqa/medmcqa_3693/pi_final_answer.txt
[2025-10-02T06:38:36.454142] [QUERYOME] Query completed successfully
