Although it is a very rare situation, four-rooted maxillary second molars can occur. The existence of two palatal roots is extremely rare and ranges about only 0.4%. The aim of this study is to present and document a very rare anatomic configuration of a four-rooted maxillary second molar. Anatomic variation in the number of roots and root canals can occur in any tooth, although some cases can ...

This study aimed to evaluate the stress distribution through the photoelastic method in implant-retained palatal obturators prostheses. Two photoelastic models with bucco-sinusal communication were fabricated, one model without implants and another with two parallel implants and one tilted in the molar region. A conventional obturator prosthesis and five implant-retained obturators dentures wit...

Malignant tumours of the upper gum and hard palate account for 1-5% of malignant neoplasms of the oral cavity; two thirds of the lesions which involve these areas are squamous cell carcinomas. Most of these carcinomas are diagnosed late, when they invade the underlying bone. The procedures of choice for removal are: alveolectomy, palatectomy, maxillectomy, which may be total or partial. Surgica...

OBJECTIVES The primary goal of prosthetic obturation is closure of the maxillectomy defect and separation of the oral cavity from the sinonasal cavities by use of different bulb designs. The aim of this study was to evaluate the articulation performance of obturator patients with three different buccal extension designs. METHODS Five patients with palatal defects of comparable sizes at ages r...

Fellatio--a sexual act in which the penis is placed into the mouth of another person--can result in submucosal hemorrhage of the palate. A young woman with fellatio-associated palatal petechiae is reported and the features of irrumation-induced oral lesions of the palate are reviewed. Fellatio-associated petechiae and purpura can potentially occur in anyone who engages in receptive penile oral ...

This in situ/ex vivo study assessed the effect of titanium tetrafluoride (TiF4) solution on erosion of permanent (P) and deciduous (d) human enamel. Ten volunteers wore acrylic palatal appliances containing 4 enamel samples, divided into two rows: TiF4 and no - TiF4 (control). Each row contained one deciduous and one permanent enamel sample. During the 1st day, formation of a salivary pellicle ...

Coarticulation between the speech organs is a natural phenomenon in human speech. To realize this mechanism in our physiological articulatory model [1], this study attempts to analyze coarticulation involved in continuous speech based on electromagnetic articulographic (EMA) data recorded from three Japanese male subjects. The spatial target of each phoneme in CVC and VCV segments out of the se...

Children born with palatal clefts are at risk for speech/language delay and speech problems related to palatal insufficiency. These individuals require regular speech evaluations, starting in the first year of life and often continuing into adulthood. The primary role of the speech pathologist on the cleft palate/craniofacial team is to evaluate whether deviations in oral cavity structures, suc...

Operative techniques in performing cleft palate repair have gradually evolved to achieve better speech ability with its main focus on palatal lengthening and accurate approximation of the velar musculature. The authors doubted whether the extent of palatal lengthening would be directly proportional to the speech outcome. Patients with incomplete cleft palates who went into surgery before 18 mon...