Tooth-related factors for tooth loss 20 years after active periodontal therapy-A partially prospective study.
Sonja Rahim-WöstefeldNihad El SayedDorothea WeberJens KaltschmittAmelie BäumerShirin El-SayedPeter EickholzBernadette PretzlPublished in: Journal of clinical periodontology (2020)
Even teeth with an initial bone loss over 60% could be retained in approximately two thirds for 20 years. This should be kept in mind when assigning prognosis and establishing a treatment plan.