Do I need a temporary crown 4 months after the placement of my dental implant?

I agree with that, you do need a temporary crown to shape the gum; in the front area what goes wrong is the the pink part (gum). You don’t want a successful implant to have a crown on top that looks different than the other teeth especially with the shape and contour of the gum around it.

With front teeth, contouring the gums properly is very important for esthetics. I would 100% recommend a temporary crown for a few months to get the proper gum contour. A temporary can be altered. A permanent crown cannot be altered very easily. It's better to make sure you have the contours and esthetics that you like before proceeding with a permanent crown. Putting on and taking off a temporary crown will not affect the integrity of the implant.

To have an esthetic result, yes, temporary crown is a good idea to contour your gums. In the front smile zone, you want your gums to be molded into a shape where your false tooth will be to look absolutely normal like a real tooth. To do that, place a specific shape there to have the gum tissue grow around that shape is critical. A temporary tooth/crown can be that shaped object to help mold the gum tissue. If it cost more money, I recommend you to invest into it because the result will look more natural with your gums shaped and molded by the temporary crown. A temporary crown will and should not hurt the healed and integrated implant underneath. If you choose to not do a temporary crown, there is another object you can use which is a contoured shaped healing abutment but if you use that, you won’t look esthetic walking around without a tooth during healing months. We usually use a contoured healing abutment in the back teeth where they’re not in the smiling zone. Hope this helped. Trust your dentist.