MAX – TRANSPALATAL SM
 Unilateral loss of E&D * in maxillary only
 Connect 6 of opposite arches *at or above 6 years old
 Acts as space maintainer + arch expansion + anchorage — function of TPA SM

NANCE PALATAL ARCH (NPA)
 Can use for both unilateral and bilateral
o E missing and D missing
 Only in maxillary
 At or above 6 years age’support from palate – not teeth

LINGUAL ARCH
 Above 7 years
 Because support from anterior teeth
 Both unilateral and bilateral and multiple missing

Anterior Space maintainer

 REMOVABLE DENTURE, with adams / c clasp / ball clasp
 RPD is advisable only if child is 3yrs above
 FIXED SPACE MAINTAINER, orthodontic bands on primary 2nd molars
 Wire extents anteriorly on the ridge and teeth are fixed on to the wire.
 Mostly for children less than 3yrs, to compensate for speech improvements

PS: If teeth will erupt in 6 months, ---- No need of space maintainer!