Unerupted or erupted supernumerary tooth may cause crowding, diastema, cyst formation, resorption, and displacement or rotation of adjacent teeth. However, there are few studies about prognosis about the pathologic condition and expectation of spontaneous eruption. The object of this study is to evaluate factors predicting the spontaneous eruption of supernumerary tooth. 431 patients (346 males and 85 females, aged from 5 to 29 years) who visited our institution from 2002-2006 and were shown to have 471 mesiodentes was reviewed. Supernumerary teeth were classified inverted and not inverted state. In case of not inverted supernumerary tooth, eruption rate according to length of supernumenary tooth, width of the tooth, angle between the tooth and incisor tooth, location (inside the incisor or not) and shape (conical or tubercle) were investigated. The regression model showed that length, width and angle were all important determinants of influencing the eruption of supernumerary tooth (p < 0.001, Pearson R: 0.619). There is no relation between shape and eruption of supernumerary tooth (p > 0.05). Location of mesiodens has an effect on eruption of supernumerary tooth (p < 0.01).
Aged ; Crowding ; Diastema ; Displacement (Psychology) ; Female ; Humans ; Incisor ; Male ; Prognosis ; Retrospective Studies ; Tooth ; Tooth, Supernumerary

PURPOSE: The first treatment of choice for nasopharyngeal carcinoma (NPC) is radiotherapy as NPC is more responsive to radiotherapy than any other head and neck cancer. We analyzed the clinical characteristics and prognostic factors of NPC patients treated at the Severance Hospital. SUBJECTS AND METHOD: Charts of 123 patients diagnosed with NPC at the Severance Hospital from 1995 to 2002 were reviewed and retrospectively analyzed. They were staged according to the 1997 AJCC criteria. According to the WHO classification, the type I included 14 cases, type II 44 cases, and type III 65 cases. Sixty-five cases were treated with radiotherapy only and 58 cases were treated with a combined modality of chemotherapy and radiotherapy. RESULTS: The factors for a poor prognosis were age over 47 years' old, histologic findings of WHO type I and advanced T, N stage. The overall 5 year survival rate was 66.22%. According to treatment modality, only the radiotherapy group was 68.6%, while the chemoradiotherapy group was 63.6%. There was no difference in survival (p>0.05). In chemoradiotherapy group, the survival of induction chemoradiotherapy group was 82.1% and the concurrent chemoradiotherapy group was 36.8%. There was significant difference in survival. CONCLUSIONS: There was no significant difference in the 5 year survival rate between the patients who were treated with radiotherapy only and those who were treated with both radiotherapy and chemotherapy.
Chemoradiotherapy ; Classification ; Drug Therapy ; Head and Neck Neoplasms ; Humans ; Prognosis ; Radiotherapy ; Retrospective Studies ; Survival Rate ; Treatment Outcome*

OBJECTIVE: To propose a new scale, the Feeding and Swallowing Scale for Premature Infants (FSSPI), based on videofluoroscopic swallowing study (VFSS) findings and to verify the reliability and validity of the FSSPI. METHODS: One hundred thirty preterm infants who had undergone VFSS were enrolled in this retrospective study. The FSSPI was developed by referring to the Baby Regulated Organization of Subsystems and Sucking approach. The FSSPI score for each VFSS video was evaluated by a physiatrist as well as by three experienced speech-language pathologists. To verify the reliability of the FSSPI, the inter-evaluator and intra-evaluator associations for the FSSPI scores were analyzed. To verify the validity of the FSSPI, the association between FSSPI scores and clinical characteristics including prognosis-related factors was analyzed. RESULTS: The mean gestational age was 27.3±2.8 weeks. The FSSPI showed a high degree of both intra-rater reliability and inter-rater reliability. Also, there was a significant negative correlation between the FSSPI score and corrected age (CA) at the time of performing VFSS. Further, a significant positive correlation was observed between the FSSPI score and CA at the time of achieving full oral feeding. A significant negative correlation was observed between the FSSPI score and weight gain, between the 1st and 2nd month after birth, and between the 2nd and 3rd month after birth, respectively. CONCLUSION: In this study, we proposed a new clinical scale using VFSS to reflect the development of feeding and swallowing skills in preterm infants. Further, we verified the reliability and validity of the scale.
Deglutition Disorders ; Deglutition* ; Fluoroscopy ; Gestational Age ; Humans ; Infant, Newborn ; Infant, Premature* ; Parturition ; Reproducibility of Results* ; Retrospective Studies ; Weight Gain ; Weights and Measures