Isa po sa mga articles dito sa Asian parents is about sa pag gamit ng pacifier. Sabi sa article, okay lang daw kssi that's their way to calm themselves. Natural sa infant mag thumb suck kasi they do that nung nasa tummy pa natin sila. If ayaw mo daw pagamitin ng pacifier, pwede daw finger mo or guide them to use theirs.
About naman sa ngipin, you may have them manage apnd eventually stop using it on their 6th month or when they start eating na.
Hope this helps.
Ann Giselle Padilla-Guadalupe