In our case, deep pits and fissures on palatal surfaces of teeth led to carious exposure
and pulpal involvement and endodontic treatment was done.
with bacterial invasion of the tooth pulp leading to a periapical abscess is the most common cause of dentocutaneous sinus tracts.
Clinical and radiographic evaluation of partial pulpotomy in carious exposure of permanent molars.
Conclusions: MTA has clinical success rate comparable to CH as a pulp dressing material for partial pulpotomy in permanent molars with carious exposures.
In a study on young posterior teeth, Mejare and Cvek  suggested that deep carious exposures be opened up so that 1 to 3 mm of exposed pulp can be removed and the pulp can be covered with CH.
Oral hygiene instruction and preventive advice were given; 16, 17, 22, 26, 27 and 35, 46 and 47 were restored; 37 had a large carious exposure.
2000] reported a success rate of 37% at 5 years and only 13% at 10 years following direct pulp capping of carious exposures less than 1 mm in diameter.
Hard-setting CaOH was the most popular direct pulp cap medicament, and 1 respondent commented that CaOH was taught specifically only for traumatic exposures and never for carious exposures