Question juridique clé
Whether new or increased claims for dental costs could be raised in the cantonal appeal and before the Federal Court
Solution extraite
The higher claims were inadmissible because the children had not asked for them in first instance; new requests are not admissible on federal appeal.
Motifs extraits
The inquisitorial principle in maintenance proceedings does not benefit an adult child in a way that would override the disposition principle for new claims. A cantonal appellate court may refuse claims seeking more or something different than requested below, and new relief is inadmissible before the Federal Court.