Question: what does it mean when the dentist says occlusal
[{'answer': 'contact between teeth', 'provenance': [{'wikipedia_id': '10179639', 'title': 'Occlusion (dentistry)', 'start_paragraph_id': 1, 'start_character': 49, 'end_paragraph_id': 1, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10179639', 'title': 'Occlusion (dentistry)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 238, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1359124508249727771}, 'section': 'Section::::Abstract.'}]}]