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document
Stability , tipping and relapse of bone-borne versus tooth-borne surgically assisted rapid maxillary expansion ; a prospective randomized patient trial . This study evaluated stability , tipping and relapse after surgically assisted rapid maxillary expansion ( SARME ) , comparing bone-borne and tooth-borne devices , in skeletally matured non-syndromal patients with transverse maxillary hypoplasia . The study is a randomized , open-label , clinical trial . Patients were randomized to bone-borne ( n=25 ) and tooth-borne ( n=21 ) groups . The surgical technique for corticotomy was the same in both groups . Expansion was performed using a bone-borne or tooth-borne device . Dental study casts , lateral and postero-anterior cephalograms were taken before treatment , after the distraction phase and at 12-month follow up . Stability , segmental maxillary tipping and relapse were studied . 23 bone-borne and 19 tooth-borne patients were analyzed . There were no significant differences between the two groups . Widening was comparable at canine , premolar and molar level . Relapse was not significant and at follow up the significant increase in distance was sustained . A significant increase in palatal width , at premolar and molar level , occurred in both groups . The maxilla moves slightly downward in SARME . Segmental maxillary tipping occurred in both groups and did not affect relapse . There is no significant difference between the two groups . In SARME , the widening achieved at dental level is stable after 12 months . Over-correction is not necessary . Tipping of the maxillary segments and increases in the retention period are equal in both groups .
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Intervention_Surgical
surgically assisted rapid maxillary expansion
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Intervention_Surgical
surgically assisted rapid maxillary expansion ( SARME )
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Intervention_Surgical
bone-borne
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Intervention_Other
and
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Intervention_Surgical
tooth-borne devices
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Intervention_Surgical
SARME
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Outcome_Physical
Stability , segmental maxillary tipping and relapse
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Outcome_Physical
Widening
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Outcome_Physical
Relapse
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Outcome_Physical
palatal width , at premolar and molar level
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Outcome_Physical
Segmental maxillary tipping
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Outcome_Physical
relapse
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Outcome_Physical
retention period
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Participant_Condition
skeletally matured non-syndromal patients with transverse maxillary hypoplasia .
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Participant_Sample-size
23
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Participant_Sample-size
19