There are many ways to close the  space created by Missing teeth.one is bridge , implant,and  removable partial dentures.impant is the best option,but placing a impant depends on many criteria lik the bone support,medical conditions and over all health.if there is adequate bone support an implant can be placed.else we cn go for a bridge that connects the adjacent existing teeth,provided the otr teeth  are firm and not  moving. cost of the impant can be from 25-35k.if the teeth are moving then removble partial dentures cn b used