Can a molar crack be fixed with bonding?

One of my lower molars hurt when chewing. My dentist saw a crack and filled with bonding - to be conservative before a crown. It feels a little better every day, 5 days later - but still some pain when chewing something hard. It feels like the pain is more forward on my molar then where he did the bonding. Would additional bonding in the tooth help? I trust my dentist but wanting another opinion before I a crown. how much bonding can be done to help a molar, or other options short of a crown?