Application of computed tomography(CT) has significantly improved the precision of the preoperative examination for dental implant treatment.This can contribute to the successful implantation procedure with safe and less anxiety in the treatments.However,the complications such as serious hemorrhage and nerve injury may occur when the implants are carried in the mandible if the accurate information on morphologies of bone cross-section and route of mandibular canal is not obtained.The studies on the route of mandibular canal using cadavers or the morphological studies on cross-sections of mandibular bones using CT were reported previously,but,as far as the authors' knowledge,there was no report on them using the panoramic images,cross-sectional images or three-dimensional(3D) images obtained by CT.The purpose of this study was to examine the efficacy of CT images on the morphologies of crosssection and the route of mandibular canal near mental foramen in mandible.A total of 105 human subjects was investigated using dental CT( New Tom).The gourd-shaped (or hourglass-shaped) cross-sectional bone image was found in 30.5% of the crosssectional images near mental foramen obtained by CT.The panoramic images and 3D images exhibited that the average length and the maximal length of mandibular incisive canal were respectively 8mm and 21mm in this study.The study suggests that CT examination should be essential in preoperative examination and more precise and accurate treatment planning could be achieved by diagnosis using CT.

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Sealant is beneficial to dental caries prevention. To improve sealants' retention and effectiveness in long term, adequate isolation and secure cleaning pits and fissures prior to sealant are the most critical aspects. One example of recommended sequence of isolation and cleaning is as follows; Rubber dam application, removal of plaque and pellicle by rotating brush, ultrasonic irrigation of pit and fissure, scratching by the explorer with sodium hypochlorite solution.
However ideal, this procedure is so complex and demands pretty long chair time that may frequently be challenging particularly in children with poor co-operation. So we tried to establish a new procedure that is simple, short chair time and results in long term stability.
Coolex®( APT) was selected as an isolation system in our procedure. Coolex® has features as follows; able to apply to newly erupted teeth, able to attach in the mouth in less than ten seconds, able to create an ideal environment for adhesive dentistry.
For pit and fissure cleaning, only scratching by the sharpened #3A explorer with10% sodium hypochlorite gel( AD gel, Kuraray) was adopted but the mechanical and ultrasonic steps were skipped.
In order to evaluate this method is effective enough to cleaning prior to sealant, 30lower molars dyed with disclosing solution were examined. Result shows that AD gel dissolved the plaque on the smooth surface in 1 minute and scratching by the #3A explorer with AD gel removed the pit and fissure plaque as well. Etchant and sealant material were selected on their fluidity to be able to flow into the bottom of pit and fissure(Red Activator,Sun Medical, Conseal F, SDI).
Cases of sealant placement with this procedure are shown in this report. They are maintained for over 7 years without breaking, falling and new caries.

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The ways of making super structure of implants are two types.One type is cementing,and another one is screw retaining type.Consideration of repair and maintenace of setting of implantʼs super structures,screw retaining type is better than cementing type.In the case of much missing theeth,this type is especially useful.But screw retaining method by lost wax had problems of the precision fit,the strength frameworks and complicated method of welder.
In this century,PIB(Procera Implant Bridge) of Nobel Biocare AB,typical and important method of Computer numeric controlled(CNC)-milled frameworks guided by CAD/CAM system,have been carried out in clinical cases in long time.In 2009another system of PIB(Nobel Biocare AB),I-Bridge(Bio-Main AB) system is start in clinical cases as CNC-milled frameworks.
In this report,we introduce how to make these CMC-milled frameworks and clinical procedures for successfull implant prosthesis concerning 486 cases in 10 years.And we consider the success rate of implants in these cases supported by PIB and I-Bridge computer numeric controlled( CNC)-milled frameworks.All implants are made by Nobel Biocare AB and the number of implants of this method is 1563.The number of removed failed implants is 5 and clinical survival rate is 99.93%.Getting the high score of success rate is because of good precision of fit and enough hardness of these frameworks.

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In conventional medicine and life science the most important concept for human life is not only the energy metabolism of mitochondria, but also the environmental energy system and the biomechanical energy system of animals themselves. However, this concept of energy has been completely over-looked. Introducing not only energy metabolism of mitochondria but also environmental energy as well as the animals own biomechanical energy of behavior into life science and medicine the author has established a new concept of Stomato-facial and Neuro-cranial medicine. From the standpoint of the new concept of medicine introducing energy, the author has developed new gompholic artificial dental roots, which have root supportive fibrous articulation instead of dental implants, which function via the ankylotic system. They are now in vogue. The concept of conventional dental implants completely lack of the odontology of the mammalian tooth. Therefore, all conventional ankylotic dental implants have no tooth supportive joint system, i. e., the remodeling system of the jawbone. The authors investigated the material, shape, and functional effect of the artificial root from the viewpoint of biomechanics and have developed effective gompholic-type artificial roots which have fibrous bone( cementoblasts) with fibrous ligaments and the alveolar bone proper. With these roots basic studies using animals, namely dogs and Japanese monkeys, were carried out. After that biomechanical studies were also carried out.Titanium artificial roots with a characteristic undulated configuration were developed, which were implanted into jawbone of dogs and monkeys. Immediately after implantation in the molar region artificial roots were fixed with a sequential crown; afterthat the chewing movement of mastication began. These mastication movements are converted into hydrodynamic energy concomitant with streaming potential around the roots, by which cementoblasts, the alveolar bone proper and fibrous tissue with capillaries are induced. Histopathological studies via light microscopy as well as studies of SEM, and micro analyzer were carried out. Following that, biomechanical numerical studies by means of FEA comparing gompholic and ankylotic as well as shape effects of artificial root configurations were carried out.

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By introducing environmental energy to medical science,the author established Stomato-facial and Neuro-cranial medicine. Through surveying todayʼs way of nurturing infants with the new concept of medicine in Japan,we must correct many mistaken methods compared to our traditional nurturing way. After birth the main behaviors of babies are suckling,breathing through nose and movement. In the conventional nurturing of infants in Japan,there is a lack of environmental energy affecting infants as well as a lack of paying respect to characteristics of mammalian babies. All mammals have a strict suckling period of motherʼs breast milk,and human infants belong to mammals. The suckling period of the human baby is from two and half to three years old. If they have food instead of breast milk or powdered milk during the suckling period they fall in sick,and in severe cases they die.
Giving food too early even to infants they easily fall sick and swallow without chewing.After that,they often become mouth-breathers. In Japan too many school children become inactive,languid,and shut themselves in the home. Therefore,in Japan we have to revive our own traditional nurturing methods for infants,which continued until1965. With enough suckling training it is easier to switch over to mastication.

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The cause of losing tooth is various.No treatment for a long-term period requires not just the prosthodontic treatment for a missing teeth, but also additional treatments.
The functional abnormality caused by loosing tooth contains many problems, such as the malposition of a teeth and the change in the mandibular position.In such cases, the comprehensive therapy is required.In the comprehensive dentistry the mandibular position is also important: it is likely that the occlusal relationship determined by the mandibular position affects the tooth caries treatment, the endodontic treatment, and the periodontal therapy.
Moreover, in some cases, it is difficult to stabilize the manidibular position by implanting artificial tooth, depending on the number, position and condition of the residual tooth.These cases require the dental implant in order to establish the manidibular position more properly.
In the present study, we report a case, in which we combined the orthodontictreatment with the dental implant in order to achieve the stabilization and functional recovery of the mandibular position.Your feedback is very welcome.

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Physical therapy employed in repair of bone and cartilage has been studied in the research of repair after bone fracture since the 1960s ¹⁾. On the other hand, Duarte first reported the efficacy of ultrasound treatment of bone fracture in 1983 ²⁾ and this treatment received wide recognition when FDA authorized SAFHS® made by Exogen,U.S. as a medical device in 1994( Fig. 1).
Also in Japan, Mizuno et al. reported in 2003 a high healing rate of more than 80% in physical therapy of delayed union of fractures and pseudarthrosis ³⁾. Thus, physicaltherapy has been accepted for more than 20 years as a treatment to shorten time to healing of various types of fractures including fresh fractures( advanced medical care), and complicated and intractable fractures( insurance applicable)( Fig. 2).
It has also been demonstrated that ion flow occurs due to a phenomenon called Wollffʼs law in which bone will remodel its three-dimensional structure according to themechanical environment it is under⁴⁾ and a phenomenon called piezoelectric effect of bone in which mechanical stress on bone generates current of injury ^5,7); as a result, streaming potentials^6,7) are generated, and stimulate repairing process of bone and cartilage. In addition, physical therapy stimulates cytokines, thus promoting growth of osteoblasts and osteoclasts as well as osteogenesis ⁸⁾.
Physical therapy for bone repair is divided in four main types:( 1) totally or semi invasive direct current( DC),( 2) capacitive coupling electric field( CCEF),( 3) pulsed electromagnetic fields( PEMF), and( 4) low intensity pulsed ultrasound( LIPU). Here, we report some findings on bone tissue regeneration around implant site, which were obtained using the ultrasound fracture treatment device developed for dental treatment (LIPUS or BR-sonic®) that is the most commonly used ultrasound device in physiatry.

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Reduction of alveolar bone has been very difficult for stability of lower full denture after lost teeth.In such a case, they can get more strong occlusal force by using miniimplant.
In usually cases, four mini implants having a diameter of 1.8mm are implanted between both mental foramen.After surgical operation, four housings are set to denture to keep balance by fixing four o-rings and mini implants.
We have various matters that demand special attention in insertion of these implants.This method can be very effective if it based enough examination, diagnosis and treatment plan.

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For the esthetic restoration needs to flexible corresponding to bring the tooth form,the tone, arrangement, and the function, close to natural teeth unlimitedly.
There is a necessity in the beautiful restoration knowing the advantage of the material use and the fault.
The final attainment point aims to be able to get the patients satisfaction appreciation of the esthetic, and functionally.

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Nowadays,the number of patient who is affected with “Dry Mouth" is projected to be approx.800 Million to 3,000 Million.However,because the visibility with the public of this “disease" is lacking and most of the patients have little awareness about it,the patients themselves have no daily symptoms,and this often results in delays in its detections.
Hence,it is sometimes detected by symptoms of the secondary oral diseases attributed to Dry Mouth,and I believe that it is essential for dental personnel to improve our level of knowledge and understanding about it.I hereby introduce a case report of Sjögren Syndrome of a patient who came to my clinic about hemorrhage from gum,whose symptom was detected by an interview,periodontal treatments and dryness of oral mucous membrane found at a dental checkup in my clinic.

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