isAnglesclassificationDefinitionAccordingtoAnglesclassification,ClassIImeansthatthemesiobuccalcuspofthelowerfirstmolaroccludesdistaltotheClassIposition.AClassIIdivision2malocclusionsarecharacterizedbyaslignarrowingoftheupperarch,crowdingoftheupperincisorswithoverlappingandlingualinclination,ainormalnasalandlipfunction.BritishstandardsclassificationDefinitionAccordingtotheBritishStandardclassification,ClassIImeansthatthelowerincisoredgesoccludeposteriortothecingulumplateauoftheupp