Can you provide more context to your question. Most readers will not know what you are referring to when you use terms such as "conventional extraction vs flap or avulsion". The more clear you are in your question, the more likely it is that someone will be able to find suitable references for you.

Thank you dr Ariel! Will adjust the question. I wrote like that as those who specialize in Periodontology/oral surgery will be familiar with that and they will probably have the paper.

I understand. By clarifying the question, others outside of your specialty can also provide input.