HELLO MAM.... Get an (IOPA) x-ray of that tooth done to check the extent of the cavity.... If the cavity is superficial and you don't have any pain then simple filling is enough.... If the cavity is deep(involving innermost pulpal region) you need to go for ROOT CANAL TREATMENT followed by capping

hello I will suggest you to get a proper check up done to ensure the right treatment of choice which can be either restoration OR if severe then you need to get an rct.

the severity has to be analysed if sufficient tooth structure is present then root canal treatment! and crown can be given .

Good morning, We are glad that u have concern towards your oral health. Firstly ur description shows that  u are not having any pain in that tooth. But the extent of tooth decay can only be assessed by radiographic evaluation so,

Hello Nothing to worry. Donot panic. Since you have not complained of pain- the cavity mostly is small and can be saved. If the cavity is small and painless- filling can be done If the cavity is painful- root canal is the option If the tooth is a third molar- it has to be extracted If the tooth is totally destroyed- extraction If there is only root of tooth left- extraction