Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1989093816', 'doi': 'https://doi.org/10.1159/000091063', 'title': 'Effect of a Casein/Calcium Phosphate-Containing Tooth Cream and Fluoride on Enamel Erosion in vitro', 'display_name': 'Effect of a Casein/Calcium Phosphate-Containing Tooth Cream and Fluoride on Enamel Erosion in vitro', 'publication_year': 2006, 'publication_date': '2006-01-01', 'ids': {'openalex': 'https://openalex.org/W1989093816', 'doi': 'https://doi.org/10.1159/000091063', 'mag': '1989093816', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/16508274'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1159/000091063', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S23327923', 'display_name': 'Caries Research', 'issn_l': '0008-6568', 'issn': ['0008-6568', '1421-976X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310317820', 'host_organization_name': 'Karger Publishers', 'host_organization_lineage': ['https://openalex.org/P4310317820'], 'host_organization_lineage_names': ['Karger Publishers'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5040228211', 'display_name': 'Á.M. Lennon', 'orcid': 'https://orcid.org/0000-0002-6478-0742'}, 'institutions': [{'id': 'https://openalex.org/I74656192', 'display_name': 'University of Göttingen', 'ror': 'https://ror.org/01y9bpm73', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I74656192']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'Á.M. Lennon', 'raw_affiliation_strings': ['Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany'], 'affiliations': [{'raw_affiliation_string': 'Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany', 'institution_ids': ['https://openalex.org/I74656192']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5113572249', 'display_name': 'M Pfeffer', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I74656192', 'display_name': 'University of Göttingen', 'ror': 'https://ror.org/01y9bpm73', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I74656192']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'M. Pfeffer', 'raw_affiliation_strings': ['Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany'], 'affiliations': [{'raw_affiliation_string': 'Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany', 'institution_ids': ['https://openalex.org/I74656192']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5003816815', 'display_name': 'Wolfgang Buchalla', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I74656192', 'display_name': 'University of Göttingen', 'ror': 'https://ror.org/01y9bpm73', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I74656192']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'W. Buchalla', 'raw_affiliation_strings': ['Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany'], 'affiliations': [{'raw_affiliation_string': 'Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany', 'institution_ids': ['https://openalex.org/I74656192']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5108104238', 'display_name': 'Klaus Becker', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I74656192', 'display_name': 'University of Göttingen', 'ror': 'https://ror.org/01y9bpm73', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I74656192']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'K. Becker', 'raw_affiliation_strings': ['Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany'], 'affiliations': [{'raw_affiliation_string': 'Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany', 'institution_ids': ['https://openalex.org/I74656192']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5027563034', 'display_name': 'Sarah Lennon', 'orcid': 'https://orcid.org/0000-0001-5095-0141'}, 'institutions': [{'id': 'https://openalex.org/I205274468', 'display_name': 'Trinity College Dublin', 'ror': 'https://ror.org/02tyrky19', 'country_code': 'IE', 'type': 'education', 'lineage': ['https://openalex.org/I205274468']}], 'countries': ['IE'], 'is_corresponding': False, 'raw_author_name': 'S. Lennon', 'raw_affiliation_strings': ['School of Dental Science, University of Dublin, Trinity College, Dublin, Ireland'], 'affiliations': [{'raw_affiliation_string': 'School of Dental Science, University of Dublin, Trinity College, Dublin, Ireland', 'institution_ids': ['https://openalex.org/I205274468']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5059504383', 'display_name': 'Thomas Attin', 'orcid': 'https://orcid.org/0000-0002-6141-1263'}, 'institutions': [{'id': 'https://openalex.org/I74656192', 'display_name': 'University of Göttingen', 'ror': 'https://ror.org/01y9bpm73', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I74656192']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'T. Attin', 'raw_affiliation_strings': ['Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany'], 'affiliations': [{'raw_affiliation_string': 'Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Göttingen, Germany', 'institution_ids': ['https://openalex.org/I74656192']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 2, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 4.437, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 77, 'citation_normalized_percentile': {'value': 0.909031, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 95, 'max': 96}, 'biblio': {'volume': '40', 'issue': '2', 'first_page': '154', 'last_page': '157'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11958', 'display_name': 'Dental Erosion and Treatment', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/3505', 'display_name': 'Orthodontics'}, 'field': {'id': 'https://openalex.org/fields/35', 'display_name': 'Dentistry'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11958', 'display_name': 'Dental Erosion and Treatment', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/3505', 'display_name': 'Orthodontics'}, 'field': {'id': 'https://openalex.org/fields/35', 'display_name': 'Dentistry'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T12145', 'display_name': 'Dental Anxiety and Anesthesia Techniques', 'score': 0.985, 'subfield': {'id': 'https://openalex.org/subfields/3504', 'display_name': 'Oral Surgery'}, 'field': {'id': 'https://openalex.org/fields/35', 'display_name': 'Dentistry'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}, {'id': 'https://openalex.org/T10113', 'display_name': 'Dental materials and restorations', 'score': 0.9826, 'subfield': {'id': 'https://openalex.org/subfields/3505', 'display_name': 'Orthodontics'}, 'field': {'id': 'https://openalex.org/fields/35', 'display_name': 'Dentistry'}, 'domain': {'id': 'https://openalex.org/domains/4', 'display_name': 'Health Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/sodium-fluoride', 'display_name': 'Sodium fluoride', 'score': 0.42291492}], 'concepts': [{'id': 'https://openalex.org/C156887251', 'wikidata': 'https://www.wikidata.org/wiki/Q2386424', 'display_name': 'Enamel paint', 'level': 2, 'score': 0.9451952}, {'id': 'https://openalex.org/C2780828025', 'wikidata': 'https://www.wikidata.org/wiki/Q44793182', 'display_name': 'Fluoride', 'level': 2, 'score': 0.917603}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.70428985}, {'id': 'https://openalex.org/C504460877', 'wikidata': 'https://www.wikidata.org/wiki/Q155925', 'display_name': 'Saliva', 'level': 2, 'score': 0.6561244}, {'id': 'https://openalex.org/C2779032678', 'wikidata': 'https://www.wikidata.org/wiki/Q159683', 'display_name': 'Citric acid', 'level': 2, 'score': 0.612997}, {'id': 'https://openalex.org/C2776142715', 'wikidata': 'https://www.wikidata.org/wiki/Q193970', 'display_name': 'Casein', 'level': 2, 'score': 0.6114418}, {'id': 'https://openalex.org/C519063684', 'wikidata': 'https://www.wikidata.org/wiki/Q706', 'display_name': 'Calcium', 'level': 2, 'score': 0.6080255}, {'id': 'https://openalex.org/C13965031', 'wikidata': 'https://www.wikidata.org/wiki/Q243545', 'display_name': 'Nuclear chemistry', 'level': 1, 'score': 0.58539975}, {'id': 'https://openalex.org/C199343813', 'wikidata': 'https://www.wikidata.org/wiki/Q12128', 'display_name': 'Dentistry', 'level': 1, 'score': 0.5311856}, {'id': 'https://openalex.org/C2777132085', 'wikidata': 'https://www.wikidata.org/wiki/Q46220103', 'display_name': 'Phosphate', 'level': 2, 'score': 0.515598}, {'id': 'https://openalex.org/C2779234887', 'wikidata': 'https://www.wikidata.org/wiki/Q407520', 'display_name': 'Sodium fluoride', 'level': 3, 'score': 0.42291492}, {'id': 'https://openalex.org/C55493867', 'wikidata': 'https://www.wikidata.org/wiki/Q7094', 'display_name': 'Biochemistry', 'level': 1, 'score': 0.17860097}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.13613418}, {'id': 'https://openalex.org/C179104552', 'wikidata': 'https://www.wikidata.org/wiki/Q11165', 'display_name': 'Inorganic chemistry', 'level': 1, 'score': 0.113312006}, {'id': 'https://openalex.org/C178790620', 'wikidata': 'https://www.wikidata.org/wiki/Q11351', 'display_name': 'Organic chemistry', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D002130', 'descriptor_name': 'Calcium Phosphates', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': True}, {'descriptor_ui': 'D002364', 'descriptor_name': 'Caseins', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': True}, {'descriptor_ui': 'D003802', 'descriptor_name': 'Dentifrices', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': True}, {'descriptor_ui': 'D005460', 'descriptor_name': 'Fluorides, Topical', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': True}, {'descriptor_ui': 'D014077', 'descriptor_name': 'Tooth Erosion', 'qualifier_ui': 'Q000517', 'qualifier_name': 'prevention & control', 'is_major_topic': True}, {'descriptor_ui': 'D000588', 'descriptor_name': 'Amines', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D000588', 'descriptor_name': 'Amines', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': False}, {'descriptor_ui': 'D000818', 'descriptor_name': 'Animals', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D001205', 'descriptor_name': 'Ascorbic Acid', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D001205', 'descriptor_name': 'Ascorbic Acid', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': False}, {'descriptor_ui': 'D002130', 'descriptor_name': 'Calcium Phosphates', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D002364', 'descriptor_name': 'Caseins', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D002417', 'descriptor_name': 'Cattle', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D003743', 'descriptor_name': 'Dental Enamel', 'qualifier_ui': 'Q000187', 'qualifier_name': 'drug effects', 'is_major_topic': False}, {'descriptor_ui': 'D003743', 'descriptor_name': 'Dental Enamel', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D003747', 'descriptor_name': 'Dental Enamel Solubility', 'qualifier_ui': 'Q000187', 'qualifier_name': 'drug effects', 'is_major_topic': False}, {'descriptor_ui': 'D003747', 'descriptor_name': 'Dental Enamel Solubility', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D003802', 'descriptor_name': 'Dentifrices', 'qualifier_ui': 'Q000737', 'qualifier_name': 'chemistry', 'is_major_topic': False}, {'descriptor_ui': 'D003802', 'descriptor_name': 'Dentifrices', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D003959', 'descriptor_name': 'Diamines', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D004305', 'descriptor_name': 'Dose-Response Relationship, Drug', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D004338', 'descriptor_name': 'Drug Combinations', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005459', 'descriptor_name': 'Fluorides', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': False}, {'descriptor_ui': 'D005459', 'descriptor_name': 'Fluorides', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005460', 'descriptor_name': 'Fluorides, Topical', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006863', 'descriptor_name': 'Hydrogen-Ion Concentration', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D012969', 'descriptor_name': 'Sodium Fluoride', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': False}, {'descriptor_ui': 'D012969', 'descriptor_name': 'Sodium Fluoride', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D018709', 'descriptor_name': 'Statistics, Nonparametric', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014002', 'descriptor_name': 'Tin Fluorides', 'qualifier_ui': 'Q000008', 'qualifier_name': 'administration & dosage', 'is_major_topic': False}, {'descriptor_ui': 'D014002', 'descriptor_name': 'Tin Fluorides', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014077', 'descriptor_name': 'Tooth Erosion', 'qualifier_ui': 'Q000139', 'qualifier_name': 'chemically induced', 'is_major_topic': False}, {'descriptor_ui': 'D014077', 'descriptor_name': 'Tooth Erosion', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1159/000091063', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S23327923', 'display_name': 'Caries Research', 'issn_l': '0008-6568', 'issn': ['0008-6568', '1421-976X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310317820', 'host_organization_name': 'Karger Publishers', 'host_organization_lineage': ['https://openalex.org/P4310317820'], 'host_organization_lineage_names': ['Karger Publishers'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/16508274', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 26, 'referenced_works': ['https://openalex.org/W1632257105', 'https://openalex.org/W1850910246', 'https://openalex.org/W1963503635', 'https://openalex.org/W1978542448', 'https://openalex.org/W1982317346', 'https://openalex.org/W1989534566', 'https://openalex.org/W1996185358', 'https://openalex.org/W2002015517', 'https://openalex.org/W2009000855', 'https://openalex.org/W2019626437', 'https://openalex.org/W2023867838', 'https://openalex.org/W2027441567', 'https://openalex.org/W2042031056', 'https://openalex.org/W2061395307', 'https://openalex.org/W2091178536', 'https://openalex.org/W2095006757', 'https://openalex.org/W2115257500', 'https://openalex.org/W2129567802', 'https://openalex.org/W2135336908', 'https://openalex.org/W2136811261', 'https://openalex.org/W2144353549', 'https://openalex.org/W2145264803', 'https://openalex.org/W2152674529', 'https://openalex.org/W2155151921', 'https://openalex.org/W2162729216', 'https://openalex.org/W2165901018'], 'related_works': ['https://openalex.org/W4232129535', 'https://openalex.org/W4220671203', 'https://openalex.org/W3214746088', 'https://openalex.org/W3179335614', 'https://openalex.org/W3151098594', 'https://openalex.org/W3045507769', 'https://openalex.org/W2539791946', 'https://openalex.org/W2414755097', 'https://openalex.org/W2091271862', 'https://openalex.org/W2029284169'], 'abstract_inverted_index': {'The': [0], 'aim': [1], 'of': [2, 230], 'this': [3], 'study': [4], 'was': [5, 60, 71, 89, 103, 131], 'to': [6, 143], 'determine': [7], 'whether': [8], 'a': [9, 228], 'tooth': [10], 'cream': [11], 'containing': [12], 'casein/calcium': [13], 'phosphate': [14], '(CasCP)': [15], 'protects': [16], 'enamel': [17, 22, 145, 177, 219], 'against': [18, 220], 'erosion.': [19], 'Sixty': [20], 'bovine': [21], 'specimens': [23, 169], 'were': [24, 34, 155], 'prepared': [25], 'for': [26, 46, 52, 73, 91, 105, 112, 133], 'profilometry': [27], 'and': [28, 117, 152, 196, 232], 'distributed': [29], 'into': [30], 'five': [31], 'groups.': [32], 'Specimens': [33], 'rinsed': [35], 'with': [36, 141, 171, 185, 203], 'artificial': [37], 'saliva': [38], 'interrupted': [39], 'by': [40, 157], '1%': [41], 'citric': [42], 'acid': [43], '(pH': [44], '2.3)': [45], '30': [47], 's': [48, 75, 93, 114, 135], '6': [49], 'times': [50], 'daily': [51], '14': [53, 153], 'days.': [54], 'Group': [55], '1': [56], '(n': [57, 67, 81, 99, 121], '=': [58, 68, 82, 100, 122, 162], '12)': [59, 69, 83, 101, 123], 'not': [61], 'treated': [62, 170, 184], '(control);': [63], 'in': [64, 78, 96, 118], 'group': [65, 79, 97, 119], '2': [66], 'CasCP': [70, 102, 186, 195, 231], 'applied': [72, 90, 104, 132], '120': [74, 92, 106, 113, 134], 'twice': [76, 94, 115, 136], 'daily;': [77, 95], '3': [80], '250': [84, 109, 189, 197, 224, 233], 'ppm': [85, 110, 129, 190, 198, 225, 234], 'fluoride': [86, 111, 125, 191, 199, 226, 235], 'as': [87], 'NaF': [88], '4': [98], 's,': [107], 'then': [108], 'daily,': [116], '5': [120], 'amine': [124], '(AmF)': [126], 'gel': [127, 173, 216], '(12,500': [128], 'fluoride)': [130], 'daily.': [137], 'Differences': [138], 'between': [139], 'groups': [140], 'respect': [142], 'erosive': [144, 167], 'loss': [146, 178], '(profilometrically': [147], 'determined': [148], 'depth': [149], 'after': [150], '7': [151], 'days)': [154], 'tested': [156], 'the': [158], 'Mann-Whitney': [159], 'test': [160], '(α': [161], '0.05).': [163], 'After': [164], '7/14': [165], 'days’': [166], 'cycling,': [168], 'AmF': [172, 215], 'showed': [174], 'significantly': [175], 'less': [176], '(18.5/35.5': [179], 'µm;': [180], 'medians)': [181], 'than': [182], 'those': [183], '(25.5/46.9': [187], 'µm),': [188, 194], '(25.0/': [192], '40.9': [193], '(23.9/47.4': [200], 'µm)': [201], 'or': [202, 227], 'no': [204], 'treatment': [205], '(26.3/49.8': [206], 'µm).': [207], 'It': [208], 'is': [209], 'concluded': [210], 'that': [211], 'highly': [212], 'fluoridated': [213], 'acidic': [214], 'can': [217], 'protect': [218], 'erosion': [221], 'while': [222], 'CasCP,': [223], 'combination': [229], 'provide': [236], 'little': [237], 'protection.': [238]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1989093816', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 3}, {'year': 2021, 'cited_by_count': 1}, {'year': 2020, 'cited_by_count': 3}, {'year': 2019, 'cited_by_count': 2}, {'year': 2018, 'cited_by_count': 6}, {'year': 2017, 'cited_by_count': 8}, {'year': 2016, 'cited_by_count': 5}, {'year': 2015, 'cited_by_count': 2}, {'year': 2014, 'cited_by_count': 5}, {'year': 2013, 'cited_by_count': 2}, {'year': 2012, 'cited_by_count': 4}], 'updated_date': '2024-12-14T06:09:37.230886', 'created_date': '2016-06-24'}