02 March 2022: Clinical Research
A Radiographic Study of the Root-to-Crown Ratio of Natural Permanent Teeth in 81 Saudi Adults
Abdulelah Sameer Sindi 1ADEF , Fuad Al Sanabani 23ADFG , Bandar M.A. Al-Makramani 23ABCDE , Khurshid Mattoo 2ABDE* , Hafiz Adawi 2BDEG , Hosain Al-Mansour 4CDEF , Fahad M. Albakri 5BDE , Mohamed M. Al Moaleem 2BDEG , Mohamed Sobhy 2ADEF , Hatem Abdu Humadi 6BCDE , Mossab Ahmad Hamzi 6BCDE , Essa Mosa Agili 6BCDE , Shailesh Jain 7CEFDOI: 10.12659/MSM.936085
Med Sci Monit 2022; 28:e936085
Figure 2 Radiographic landmarks used to measure root (length) and crown (height) in the assessment of the root-crown (R/C) ratio. a – apical level, i – incisal/occlusal reference line, RL – root length, Crh – crown height, m – the midpoint of the line connecting the mesial and distal proximal bone. Root length in mm=measured perpendicular from point m to point a. Crown height in mm=measured perpendicular from point m to i. (Figure created using MS Paint, version 20H2 (OS build 19042,1466), MS PowerPoint, windows 10 Pro, Microsoft corporation).