What cases perform, better with braces? and with aligners? How do the different aligner companies compare during the process? and final outcomes? Dr Tay interviews Dr Andrew Chang on aligners. A synopsis is below: What are aligners? 3:00. What cases are suitable for aligners? Patient Factors Malocclusion factors ie: deep bite, absolute intrusion of incisors in adults. 6:00: Difference between absolute and relative incisor intrusion and difference in effectiveness of aligners.