Clinical evaluation is very important before commenting on treatment plan as jaw pain could be due to various reasons. According to my opinion firstly that suspected tooth should made bite free for few days.if only during chewing food jaw pain sustain and rest of the time no pain present at TMJ it would be suspected that the jaw pain is from #46.
Next Steps
if it become confirmed that jaw pain is b/o fractured tooth, it should be extracted then.as cbct is also showing fractured root.
Health Tips
avoid chewing food with that side