Versions of Indiana Code 25-13-1-10.7. Administration of nitrous oxide by a dental hygienist or dental assistant; requirements on LawServer 2023 Indiana Code 25-13-1-10.7. Administration of nitrous oxide by a dental hygienist or dental assistant; requirements 2022 Indiana Code 25-13-1-10.7. Administration of nitrous oxide by a dental hygienist or dental assistant; requirements 2021 Indiana Code 25-13-1-10.7. Administration of nitrous oxide by a dental hygienist or dental assistant; requirements 2020 Indiana Code 25-13-1-10.7. Administration of nitrous oxide by a dental hygienist or dental assistant; requirements