(4,26,27) (Figure 3 a) Now, poor crown-to-root ratio can result from improper dental treatment as well as from traumatic or pathologic changes that either increase the length of the clinical crown
or decrease the length of the clinical root.
Increase of clinical crown
and surgery for prosthetic purposes.
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.
The limitations of the straight-wire appliance become apparent, however, when one considers the variations inherent in natural crown forms, as well as the variations of root position in relation to the clinical crown
Surgical periodontal therapy consisted of clinical crown
lengthening procedures for mandibular right and first and second molars.
Ration of the clinical crown
length to the root length
In today's era of evidence - Reattachment procedures have proven to be a boon for patients with clinical crown
fracture due to dentofacial trauma.
Most recently, focus has been on the clinical crown
increases of the anterior-superior teeth, at the expense of gingival tissue only, without involvement of bone tissue .
Biometric analysis of the clinical crown
and the width/length ratio in the maxillary anterior region.
The maxillary anterior teeth showed a thin incisal edge, incisal wear, and reduced clinical crown
Clinical examination revealed that tooth had short clinical crown
with deep bite, radiographic examination of the obturation was found to be intact (Fig 2) and tooth was asymptomatic.
In the present case report maxillary denture was reinforced with metal denture base and the abutments were of adequate clinical crown
height to receive attachment; multiple abutments were splinted anterior to edentulous span to aid in better distribution of stresses.