“…In terms of the number of teeth, 14 studies evaluated the number of missing teeth 38 , 39 , 41 – 45 , 47 , 50 , 51 , 55 , 57 , 58 , 59 while 10 studies evaluated the number of remaining teeth 40 , 46 , 48 , 49 , 52 – 54 , 56 , 61 , 60 . In the analyses, only four studies used measured values 43 – 45 , 47 while the other 20 categorized measured values. Categorizations were vastly different.…”