It is extremely difficult to recover the condition when stripping an occlusal screw that functions to fix the superstructure of a dental implant. Here, the author reports a successful case in which a stripped occlusal screw was removed under a microscope without destroying the superstructure of the implant.

A patient was referred for endodontic treatment of the maxillary left lateral incisor. Apicoectomy treatment with the Er,Cr:YSGG laser was rendered and LLLT was applied with the diode laser. The patient was seen the next day for follow-up. Pain level and tissue appearance were recorded to gauge short-term soft-tissue healing.

Rubber dam isolation is essential for the safety and efficiency of treatment using microscopes in which precise procedures are carried out, since it allows concentration on the operating field. When isolating multiple teeth in the molar region, problems may be encountered, such as wrinkling of the rubber dam, exposure of the gum, or unbalanced positioning of the sheet too far in one direction. However, there do not appear to be any papers that address such problems. The objective of the present study was to examine the sideways positional relationship of the punched holes in the rubber dam, the interval between punched holes, and the range of isolation, in order to consider methods for favorable rubber dam isolation. An oral cavity cover and a model jaw were fitted to a simple manikin. The teeth for isolation were #23–#27. Five types of rubber dam templates were used for the study. Conclusion: It was found that, when a template is used for isolation of multiple teeth in the molar region, appropriate rubber dam isolation can be obtained by shifting the punching holes on the template 10 mm from the center. In addition, with the model used in the study, as well as setting the isolation range at #11–#27, the most appropriate rubber dam isolation was carried out by placing a clamp over the rubber sheet at #15, setting the interdental intervals at #23–#26, the same as on the template by Roeko, and setting the interval of #26–#27 at 8 mm. The results suggested that favorable isolation of multiple teeth in the molar region can be achieved by shifting the punching sites about 10 mm in the direction away from the side to be isolated, giving a more inner curve than the original curve of the dental arch, and setting the interdental interval slightly short.

A patient was referred for endodontic treatment in a mandibular first molar and a diagnosis of Irreversible Pulpitis with Normal Periapex was formulated. Preoperative radiographs revealed questionable anatomy. Laser-assisted endodontic treatment was rendered within the root canal configuration under the guidance of CBCT imaging.

Since the invention of laser devices, laser has been utilized in many realms for the past decades, including medical and dental procedures. There is replete research that has proventhat laser can reduce inflammation, control pain, accelerate healing and cell regeneration, accelerate orthodontic movement, and many more; nevertheless, many and most dental practitioners still think that laser is just a myth. The aim of this review is to increase the awareness of us, clinicians towards laser and encourage its wider use. This article will describe the mechanism of action of laser and the their various applications in various aspects of dental practices.

X-ray imaging is an essential technique in diagnosis and treatment. Conventionally, techniques such as intraoral dental radiography and panoramic X-rays have been used; however, cone beam computed tomography (CBCT) became available in 1999. By reconstructing image data, CBCT has enabled diagnoses to be made using three-dimensional images. In the present study, a questionnaire survey on CBCT was conducted on members of the Japan Association of Microscopic Dentistry (JAMD). Questionnaires were sent to 1,148 dentists who were full members of the Japan Association of Microscopic Dentistry, and 252 responses were received (response rate, 22.0%). The most common manufacturer of the CBCT machine used was Morita (30.2%), followed by Yoshida (26.2%). The number of dentists starting to use CBCT has been increasing in recent years, and the most common purpose of using CBCT was endodontic treatment (230 dentists), followed by implants (110 dentists). Studies from Turkey and Norway reported that the highest rate of CBCT use was for implant planning. As the participants in the present study were limited to members of the JAMD, care should be taken when generalizing the results to the wider population.