Hello Post doing your clinical evaluation and considering various factors we can decide if implant is required or not. Replacement post extraction is mandatory as it will take care of your bite. Implant is a very good treatment option and the success rate is great if the treatment planning is done the right way. If you don't get the extracted tooth replaced then your occlusion can be affected and you can even face difficulty in chewing food and change in profile. More clarity on the situation can be discussed after clinical evaluation of your oral cavity.