The incisive papilla as a guide to maxillary anterior teeth position for complete dentures

Context: The incisive papilla as a guide for complete dentures. Aims: To evaluate incisive papilla as a guide to maxillary anterior teeth position for complete dentures. Settings and Design: To measure the linear distances from the incisive papilla to the maxillary central incisors in Odia population and compare it to other ethnic groups. Subjects and Methods: The subjects were selected following inclusion & exclusion criteria. The impressions of maxillary & mandibular arches were taken and poured with die stone to produce the cast. The incisive papilla & incisors were marked on casts with a pencil. The photographs of casts were traced on an acetate tracing paper. The anterior-most points of maxillary incisors, anterior, middle & posterior-most points of incisive papillae were marked on the tracing as A, I1,M, I2 respectively. The A to M and A to I2 distances were measured, analysed and compared with Caucasians, Southern Chinese, and Dravidians. Statistical Analysis: Independent sample “t” test and Analysis of Variance followed by the post-hoc Bonferroni test were used. Results: A sample of 100 subjects in the age group of 20 to 40 years with was selected. The A to M measurements of Odia population differed significantly from Caucasians but were similar to Southern Chinese population. The A to I2 measurements of Odia population differed significantly from Caucasians & Dravidians but were similar to Southern Chinese. Conclusion: The linear measurements from incisive papilla to maxillary incisors of the Odia population are similar to that of Southern Chinese but differ significantly from Caucasians and Dravidians.

Morphological characterization of the nasopalatine region in human fetuses and its association to pathologies

The nasopalatine region is composed of structures such as the vomeronasal organ and nasopalatine duct. The nasopalatine duct may provide the communication of the mouth to the nasal cavity in human fetuses and can be obliterated in an adult human. Knowledge on the development of the nasopalatine region and nasopalatine duct in humans is necessary for understanding the morphology and etiopathogenesis of lesions that occur in this region. Objective The aim of the present study was to describe the morphological aspects of the nasopalatine region in human fetuses and correlate these aspects with the development of pathologies in this region. Material and Methods Five human fetuses with no facial or palatine abnormalities were used for the acquisition of specimens from the nasopalatine region. After demineralization, the specimens were histologically processed. Histological cuts were stained with methylene blue to orient the cutting plane and hematoxylin-eosin for the descriptive histological analysis. Results The age of the fetuses was 8.00, 8.25, 9.00 and 9.25 weeks, and it was not possible to determine the age in the last one. The incisive canal was observed in all specimens as an opening delimited laterally by the periosteum and connecting oral and nasal cavity. The nasopalatine duct is an epithelial structure with the greatest morphological variation, with either unilateral or bilateral occurrence and total patent, partial patent and islet forms. The vomeronasal organ is a bilateral epithelized structure located alongside the nasal septum above the incisive canal in all the fetuses. Conclusions The incisive canal, nasopalatine duct and vomeronasal organ are distinct anatomic structures. The development of nasopalatine duct cysts may occur in all forms of the nasopalatine duct. .

Anatomic study of the incisive canal in relation to midpalatal placement of mini-implant / 대한치과교정학회지

OBJECTIVE: The purpose of this study was to reveal the position of the incisive foramen in relation to the incisive papilla and cusp tips. METHODS: Plaster models and CT images of 25 adult orthodontic patients were used to measure the width of the incisive canal and positions of the anterior and posterior borders of the incisive foramen in relation to the incisive papilla. RESULTS: The palatal surface distance from the interdental papilla between the maxillary central incisors to the posterior border of the incisive foramen along the palatal surface was 1.7 fold of the distance from the interdental papilla between the central incisors to the posterior border of the incisive papilla. The distance between the posterior border of the incisive papilla and posterior border of the incisive foramen along the palatal surface was 6.15 +/- 1.75 mm. The anteroposterior position of the posterior border of the incisive foramen was slightly anterior to the lingual cusp tips of the maxillary 1st premolars. The width of the incisive foramen was 4.03 +/- 0.64 mm, therefore it is recommended to position the mini-implant more than 3 mm laterally when placing a mini-implant lateral to the incisive foramen, from the center. CONCLUSIONS: These results can be used as a reference in presuming the position of the incisive foramen when placing mini-implant in the anterior palate area.

Trigeminal Autonomic Cephalalgia by Neurogenic Palatine Compression: A Clinical Report and Review / Cefalea Autonómica Trigeminal por Compresión Neurogénica Palatina: Reporte de Caso y Revisión

This clinical report presents the evolution of a possible intraoral traumatic trigeminal autonomic cephalalgia simulating a probable cluster headache. A 50-year-old female patient had severe right-hand side pain for 7 years with autonomic signs and symptoms, such as lacrimation, conjunctival injection, rhinorrhoea, nasal congestion, forehead perspiration, myosis and eyelid edema. The episodes of pain lasted 4 or 5 months with 3- or 4-month remission periods between the painful onsets. The headaches presented an episodic pattern (1 to 3 attacks daily) lasting three to six hours. The patient had used five prosthetic sets continuously (24 h) for 20 years and the current prosthesis was 7 years old. Accidentally, after the alleviation of the maxillary denture due to it rested on a marked irritated incisive papilla the symptoms disappear. The patient has been periodically checked over a 5 year period since, without recurrence of her pain and autonomic symptomatology. The possible pathophysiology is discussed.

Se presenta un caso de cefalea autonómica trigeminal que simula una cefalea en cluster probable con potencial origen traumático intraoral. Mujer de 50 años que reportaba dolor derecho de intensidad severa con 7 años de evolución. El dolor se presenta con síntomas vegetativos como epifora, irritación de la conjuntiva ocular, rinorea, congestión nasal, sudoración frontal, miosis y edema palpebral. Los episodios de dolor se presentaban intermitentemente en el año, con duración de 4 a 5 meses y periodos de remisión de 3 a 4 meses. Las cefaleas se presentaban de manera episódica en el día (1 a 3 episodios) que duraban de 3 a 6 horas. Se observa prótesis intraoral en mal estado, con 7 años de realizada. La paciente reporta la elaboración de 5 juegos protésicos hasta la fecha y que usa constantemente en el día y la noche. Accidentalmente, y antes de la remisión a otro especialista, los síntomas desaparecen después del alivio mecánico en la zona anterior de la prótesis, que comprimía e irritaba la papilla incisiva. La paciente ha estado bajo controles periódicos durante 5 años y medio, sin recurrencia de los síntomas. La posible fisiopatología es discutida.