The hall technique is minimally invasive type of caries management technique for treating occluso-proximal carious primary molars. The hall technique has biological principle as it can arrest caries and protect the tooth until it sheds. The essential layer in the biofilm responsible for caries progression (superficial plaque layer), is left and sealed along with the caries. As a response the composition of the plaque biofilm will be altered to a less cariogenic flora.  Using hall technique, the crown is cemented without local anaesthesia, caries removal or tooth preparation. As occlusal reduction is not done in standard hall technique, there will be discrepancy in the occlusion and occlusal vertical dimension. In modified hall technique the occlusion might settle faster as compared to standard halls technique due to minimal occlusal reduction done prior to the placement of Preformed Stainless Steel Crown (PMC). In intraoperative stage, patient acceptance regarding pain and anxiety can be recorded using self-reported Wong Baker Faces Pain Rating Scale. Children have to select from six faces which represent closely to how they felt at the time of assessment and Frankl scores can also be evaluated. This study aims to assess the occlusion after placement of preformed stainless-steel crown in occluso–proximally carious primary molars by modified versus standard hall technique over period of  12months and also to assess the child’s intraoperative behaviour acceptance after placement of preformed stainless-steel crown.