Table 7:

Advantages and disadvantages of preformed band and loop space maintainer over conventional band and loop

Advantages  It is a single-sitting procedure  It requires no impression making  It requires less chairside time, hence aids in better behavior management of the child  In these appliances, many steps are either shortened or eliminated, such as the time required for the transferring and positioning of the band on the impression made, the pouring of the cast, the waiting period for its setting, and the removal and trimming of the cast is saved  The technique is accurate as markings are made intraorally and repeatedly confirmed for their correct position, unlike the conventional technique, which has errors related to impression-making and band dislodgement on the cast  This method can be easily mastered  It is less technique sensitive Disadvantages  When the morphology of tooth deviates from the normal, preformed bands cannot be adapted over it. It requires the use of conventional bands