Hello, from the photo and x ray provided by you it seems like both side lateral incisors are missing.Pain during RCT procedure depends upon dentists skill. Generally there is no pain during RCT. By seeing your problem i think you need orthodontic treatment first to make your teeth aligned properly ... Then you can go for crowns n bridges for better smile... But the whole process will take some time because its a lenghty process.
Next Steps
According to my opinion if you are not very much concerned about your smile then let it be as it is. The natural teeth are the best not to disturb.
Health Tips
For more details consult online or book in clinic appoinments with the doctor.