Will my molars meet again?

Thank you for reaching out and sharing your concerns. It’s completely understandable to feel a bit anxious when adjusting to new dental work. The bonding process you've undergone for your front teeth aims to restore their length and protect the exposed pulp, which is crucial for maintaining the health of your teeth.
Regarding your molars, you're correct that teeth don't "grow" in height. However, what your dentist likely meant is that your bite may naturally adjust over time. This process is called "occlusal adjustment," where your teeth settle into a more comfortable and functional position as you chew and use them. It’s common for it to take a few weeks for your bite to feel normal again as the muscles and joints in your jaw adapt to the new positioning.
If you're finding eating awkward right now, that’s also normal after a significant change in your bite, and it should gradually improve. However, if the discomfort persists or if you're feeling too anxious, I recommend scheduling a follow-up with your dentist to discuss any concerns and see if any minor adjustments can be made to improve your comfort in the meantime.