125 Redundant tooth loss prior to head and neck radiotherapy 5 M2ic: Molar 2 inferior contralateral = Mandibular second molar on the contralateral side M2ii: Molar 2 inferior ipsilateral = Mandibular second molar on the ipsilateral side M2sc: Molar 2 superior contralateral = Maxillary second molar on the contralateral side M2si: Molar 2 superior ipsilateral = Maxillary second molar on the ipsilateral side M3ic: Molar 3 inferior contralateral = Mandibular third molar on the contralateral side M3ii: Molar 3 inferior ipsilateral = Mandibular third molar on the ipsilateral side M3sc: Molar 3 superior contralateral = Maxillary third molar on the contralateral side M3si: Molar 3 superior ipsilateral = Maxillary third molar on the ipsilateral side N- classification: node classification according to the TNM-classification 8th edition.[17, 18] OR: odds ratio Pm1ic: Premolar 1 inferior contralateral = Mandibular first premolar on the contralateral side Pm1ii: Premolar 1 inferior ipsilateral = Mandibular first premolar on the ipsilateral side Pm1sc: Premolar 1 superior contralateral = Maxillary first premolar on the contralateral side Pm1si: Premolar 1 superior ipsilateral = Maxillary first premolar on the ipsilateral side Pm2ic: Premolar 2 inferior contralateral = Mandibular second premolar on the contralateral side Pm2ii: Premolar 2 inferior ipsilateral = Mandibular second premolar on the ipsilateral side Pm2sc: Premolar 2 superior contralateral = Maxillary second premolar on the contralateral side Pm2si: Premolar 2 superior ipsilateral = Maxillary second premolar on the ipsilateral side SD: Standard Deviation T- classification: tumor classification according to the TNM-classification 8th edition.[17,18]
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