@article{article_424633, title={Discrepancy in the lower arch perimeter in patients with a unilateral cleft lip and palate: orthodontic model analysis}, journal={Acta Odontologica Turcica}, volume={36}, pages={16–20}, year={2019}, DOI={10.17214/gaziaot.424633}, url={https://izlik.org/JA48FY98NR}, author={Gülşen, Ayşe and Işık Aslan, Belma and Uzuner, Fatma Deniz and Tosun, Gülce and Üçüncü, Neslihan}, keywords={Crowding,dental arch,diastema}, abstract={<p class="Pa3" style="text-align:justify;line-height:normal;"> <span class="A1"> <b> <span lang="en-us" style="font-size:14px;font-family:Helvetica;" xml:lang="en-us">Objective: </span> </b> </span> <span class="A1"> <span lang="en-us" style="font-size:14px;font-family:Helvetica;" xml:lang="en-us"> </span> </span> <span class="A1"> <span lang="en-us" style="font-size:11pt;font-family:Helvetica;" xml:lang="en-us"> <span style="font-size:14px;">This study
aimed to assess the lower arch length discrepancy in a group of patients with unilateral cleft lip and palate (UCLP). </span> </span> </span> </p> <p> </p> <span style="font-size:14px;"> </span> <p class="MsoNormal" style="margin-bottom:.0001pt;text-align:justify;line-height:normal;"> <b> <span lang="en-us" style="font-family:Helvetica;font-size:14px;" xml:lang="en-us">Materials
and Method: </span> </b> <span lang="en-us" style="font-family:Helvetica;font-size:14px;" xml:lang="en-us"> P </span> <span class="A1"> <span lang="en-us" style="font-size:14px;font-family:Helvetica;" xml:lang="en-us">retreatment
dental casts and panoramic radiographs of 23 patients (aged 9–19 years) with a
nonsyndromic complete UCLP, without having </span> </span> <span lang="en-us" style="font-family:Helvetica;" xml:lang="en-us"> <span style="font-size:14px;">large
restorations/crowns, tooth agenesis, impacted or </span> <span style="font-size:14px;">supernumerary </span> <span style="font-size:14px;"> teeth in the lower arch, and previous orthodontic
and/or prosthetic treatment, </span> </span> <span class="A1"> <span lang="en-us" style="font-size:14px;font-family:Helvetica;" xml:lang="en-us">were evaluated. All patients underwent lip
and palate repair. </span> </span> <span lang="en-us" style="font-family:Helvetica;font-size:14px;" xml:lang="en-us"> </span> <span class="A1"> <span lang="en-us" style="font-size:14px;font-family:Helvetica;" xml:lang="en-us">Lower arch discrepancies were determined using the Hayes-Nance
analysis. Panoramic radiographs were used to estimate the size of permanent
premolars for the patients with late mixed dentition. The positive discrepancy
defined diastema, whereas the negative discrepancy defined crowding in the
lower arch. Descriptive statistics were presented using frequencies and
percentages, and the differences were evaluated using the binomial test. </span> </span> <span class="A1"> <span lang="en-us" style="font-size:10pt;font-family:Helvetica;" xml:lang="en-us"> </span> </span> </p> <p> </p> <span style="font-size:14px;"> </span> <p class="Default" style="text-align:justify;"> <span class="A1"> <b> <span lang="en-us" style="font-size:14px;font-family:Helvetica;" xml:lang="en-us">Results: </span> </b> </span> <span class="A1"> <span lang="en-us" style="font-size:11pt;font-family:Helvetica;" xml:lang="en-us"> <span style="font-size:14px;">One out of 23 patients had no discrepancy in the
lower arch. For the remaining patients (n = 22), the prevalence of diastema was
47.8% (n = 10), with a mean value of 3.6 ± </span> <span style="font-size:14px;">1.9 mm </span> <span style="font-size:14px;">, and lower arch
crowding was observed in 52.2% (n = 12), with a mean value of –2.9 ± </span> <span style="font-size:14px;">1.4 mm </span> <span style="font-size:14px;">. No significant
difference was found between the prevalence of crowding and diastema (p = 0.832). </span> </span> </span> <span lang="en-us" style="font-size:11pt;font-family:Helvetica;" xml:lang="en-us"> </span> </p> <p> </p> <span style="font-size:14px;"> </span> <span class="A1"> <b> <span lang="en-us" style="font-size:14px;line-height:115%;font-family:Helvetica;" xml:lang="en-us">Conclusion: </span> </b> </span> <span class="A1"> <span lang="en-us" style="font-size:14px;line-height:115%;font-family:Helvetica;" xml:lang="en-us"> </span> </span> <span class="A1"> <span lang="en-us" style="font-size:10pt;line-height:115%;font-family:Helvetica;" xml:lang="en-us"> <span style="font-size:14px;">In patients with a UCLP, diastema
can be encountered approximately at the same frequency as crowding in the lower
arch. Crowding was at a low to </span> <span style="font-size:14px;">mid-level </span> <span style="font-size:14px;">. </span> </span> </span>}, number={1}