Caption: Figure 15: Temporary restorations numbers 13-23 in situ 1 month after crown lengthening
on numbers 12, 11, and 21.
Reis et al., "Open-flap versus flapless esthetic crown lengthening: 12-month clinical outcomes of a randomized controlled clinical trial," Journal of Periodontology, vol.
Joly, "Aesthetic crown lengthening: a flapless, new approach," Revista da Associacao Paulista de Cirurgioes Dentistas, vol.
To select the proper treatment approach for crown lengthening
, an analysis of the individual case with regard to crown-root alveolar bone relationships should also be included.
Figures 7a and 7b: Mandibular occlusal and lateral views showing gross destruction of coronal tooth structure of mandibular molar and premolar respectively requiring surgical crown lengthening
, resulting in an increased CRR, before the institution of restorative therapy.
Surgical crown lengthening
may include the removal of soft tissue or both soft tissue and alveolar bone.
However these procedures are more cumbersome than surgical crown lengthening
because of the necessity of a surgical and retention phase of clinical crown lengthening
after orthodontic forced eruption, need for several session of fibrotomy to prevent the periodontal tissue from being pulled coronally together with the orthodontically moving root and relapse tendency.
After root canal treatment we extracted the tooth, clean the socket and reimplanted tooth again, but due to very low crown root ratio we adjusted the crown length during reimplantation to prevention of crown lengthening
or force eruption afterwards.
Then filled % of the socket with hydroxyapatite that we prepared before and inserted the tooth inside the socket and adjusted the tooth up to the ideal length, it will prevent the crown lengthening
in a crownless tooth.