Glad to know i hope you will check all parts of Fundamentals Series. Dont forget to subscribe to the channel Rakesh :) If you have suggestions, do mention :)
Welcome.. do check this video on Dental Ceramics if you find it difficult. Here is the link.. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-p350BuUVALs.html
For Composites you dont, for Amalgam you have to. Do Watch all parts of this video to understand it better. Here is the link ru-vid.com/group/PLdPsg6P-6VldA4PC0H0z54QVemWhi75Ke
Yes. The presence of liner depends on RDT. If the RDT is less than 0.5 mm then liner is required for all the restorations including Composites. The base can be ommiteed for Composites, since they are insulative. However since it has shrinkage once can reduce it by giving gic base for taking advantage if sandwich technique. Pls watch this series on pulp protection to understand it better . Here is the link ru-vid.com/group/PLdPsg6P-6Vlezs_0ZaBoOU7u9OC_KlVma