The word ‘neuralgia’ is derived from an ancient Greek word- Neuron which means nerve and Algos meaning pain. Neuralgia is nothing but a pain of severe throbbing or stabbing character in the course of distribution of a nerve. There are different types of neuralgias like post-herpetic neuralgias, occipital, geniculate, glossopharyngeal, sphenopalatine, para-trigeminal and trigeminal neuralgias. Among all the neuralgias trigeminal neuralgia is the most severe form, which is routinely encountered by the dental professionals. According to advanced study reports trigeminal neuralgia which is also known as Fothergill’s disease or Tic- doloureux (i.e. painful jerking) is observed in about 4 in 100,000 cases.

Aim:The aim of the study was to analyse the sealing ability of three root canal sealers: AH Plus, MTA Fillapex and Resilon/RealSeal SE.
Methodology:Eighty freshly extracted human permanent mandibular first premolars were decoronated using a diamond disc at a level of 14 mm from the root tip in order to maintain uniformity of specimen length. Cleaning and shaping was done using Hyflex CM rotary instruments. The teeth were randomly divided according to the obturating material into three experimental groups.
The coronal part of each root specimen was attached to an apparatus initially proposed by Xu., et al. to assess endodontic micro-leakage.
All specimens were then incubated at 37°C during the observation period. Samples were then analyzed with a glucose kit using colorimetry, and were expressed in mMol/L.
Conclusion:None of the sealers were efficient in preventing microleakage within the root canals. Under the experimental condi-tions, AH Plus had the least amount of endodontic leakage followed by RealSeal SE and MTA Fillapex.
Keywords:AH Plus; Resilon; RealSeal SE; MTA Fillapex; Hyflex CM

Purpose:The novel ultrasonic osteotomy technique called piezosurgery is an alternative to conventional osteotomy devices. The aim of this study was to compare the micromorphology after the use of five different ultrasonic osteotomy in rabbit skulls.
Materials and Methods:Fresh bone samples were taken from a rabbit skull using the Piezosurgery® 3 (insert tip – OT7), Piezosurgery® Medical (insert tip – MT1-10), Piezon Master Surgery® (insert tip – SL1), VarioSurg® (insert tip – SG1), and Piezotome® 2 (insert tip – BS1 II). For conventional histological analysis Masson-Goldner Trichrome staining was performed. Additionally, the bone surfaces were examined using a dark field microscope.
Results:The histological analysis of the stained bone samples as well as the dark field microscopic examinations of the unmodified bone samples revealed typical calvarial bone structure with compact (external and internal) and spongy (diploe) bones. Minor differences between the tested ultrasonic devices could be observed regarding the amount of bone debris and the integrity of cancellous bone within the osteotomy line.
Conclusion:In the present study, minor micromorphological differences following the use of five ultrasonic devices could be identified and due to the bone micro-architecture preservation found all tested devices might facilitate bone healing.
Keywords:Bone Micromorphology; Ultrasonic Osteotomy; Rabbit Skull; Dark Field Microscopy; Piezosurgery