Complicated crown fracture occur in a patient of age 8 years. Within 12 hours of accident, they reported to the dentist. What could be the line of treatment?
Here, the age of the patient is 8 years that means apex of the traumatised tooth is open.
A complicated crown fracture involves enamel, dentin, and pulp.
In a situation of a traumatic pulp exposure of a tooth (injuries in which most patients are young  ), the patient typically presents for treatment within 48 hours because of sensitivity and aesthetic concerns. 
Apexogenesis is a treatment designed to preserve vital pulp tissue in the apical part of a root canal so that formation of the root apex may be completed. The clinical procedure is essentially a deep pulpotomy undertaken to preserve the formative capacity of the radicular pulp in immature teeth that have deep pulpal inflammation. 
Examples include carious exposures and some trauma cases in which treatment of the exposed pulp is delayed and it becomes necessary to extend farther into the canal to reach healthy tissue.
Cvek pulpotomy
Pulpotomy
Pulpectomy
Partial pulpotomy followed by apexogenesis