Older patients inevitably have a higher need for implant treatment, it is unknown how mental changes or psychological aspects affect the outcome of implant treatment. This study evaluated the success rate of implants and the influence of personality traits in the older people. The goal was to provide evidence for predictable implant treatment while taking into account the unique psychological changes of elders.Participants were patients who were able to independently visit our hospital between March 2004 and May 2021. Inclusion criteria were patients aged 65 years or older at the time of implant placement with regular follow-up for at least 1 year. The implant success rate was calculated by counting peri-implantitis and implant loss as failures. Multivariate analysis was used to examine the effect of patient personality characteristics on the success rate.Fifty-six implants were included in 23 patients (12 men, 11 women), with a mean age of 68.5 years (65-76) and mean maintenance duration of 9 years and 2 months. The cumulative survival rate was 87% at the patient level (94.6% at the implant level). Statistically significant differences were found for adaptive traits (odds ratio [OR] = 0.04) and non-adaptive traits (OR = 6.38); however, no significant differences were found for the other independent variables.The overall implant success rate was 69.6% at the patient level (82.1% at the implant level). The personality traits in older people had a significant effect on the implant failure rate.
Xerostomia often occurs in elderly patients due to Sjogren’s syndrome, sialadenitis, IgG4-related disease, diabetes,
dyslipidemia, and side-effects from certain medications. It is defined as a disturbance in saliva secretion, which
can be triggered by radiation therapy and causes many oral and dental problems. Therefore, it is necessary to
ameliorate oral symptoms and regenerate salivary glands in patients with these diseases. To relieve xerostomia and
stomatitis, herbal medicines such as Japanese traditional medicine (Kampo) are often applied. Kampo therapy is
effective for dry mouth symptoms. However, the salivary gland is complex and it is difficult to regenerate the salivary
gland through clinical treatment. Byakkokaninjinto and Goreisan are often used as Kampo therapy for xerostomia
through regulation of aquaporins. To investigate salivary gland regeneration after inflammation and atrophy, ductligation
animal models were used in our previous studies. This model revealed that cytoskeletal changes and the
distributions of small Rho GTPases, fibroblast growth factors, and β-catenin have important roles in cell proliferation
and differentiation during submandibular gland regeneration.
Delayed eruption of permanent teeth during the replacement period is relatively common in clinical practice; however, impaction of the mandibular first molar is rare. There are various causes of delayed eruption of permanent teeth such as odontogenic cysts and tumors. This article describes the management of two odontogenic tumors that caused the delayed eruption of the mandibular first molar. In Case 1, an eight-year-old boy was diagnosed with an unerupted right mandibular first and second molar that had an odontogenic tumor around them. Radiographic examination revealed well-defined unilocular radiolucency with impacted first and second molars and scattered radiographic opaque images at the right mandibular. The lesion was completely curettaged with extraction of the second molar, and the first molar was fenestrated. Pathological microscopic examination provided the diagnosis as an ameloblastic fibro-odontoma. In Case 2, an 11-year-old boy was diagnosed with an unerupted right mandibular first molar that had an odontogenic tumor around it. Radiographic examination revealed well-defined unilocular radiolucency with an impacted first molar and scattered radiographic opaque images at the right mandibular The lesion was completely curretaged, and the first molar was fenestrated. Pathological microscopic examination provided the diagnosis of odontoma. Among these two cases, the preserved first molar erupted at each regular position. We demonstrated that even if an odontogenic tumor is present along with an impacted molar, removal of the tumor can result in the eruption of the impacted tooth.
Desquamative gingivitis (DG) is characterized by desquamative erosion, edematous erythema, and vesicle formation on the gingiva. Because of its prevalence in women during the pre- and postmenopausal period, its potential association with female hormones has been suggested. Equol is a soy isoflavone metabolite with a chemical structure similar to estrogen. Scientific evidence suggests that equol helps in alleviating menopausal symptoms. This study evaluated the clinical effect of a 12-month equol supplementation as a substitute for estrogen to alleviate DG symptoms.
The aim of this study was to examine the bone regenerative process from fibular periosteum in rats. Twenty male Wistar rats were divided into two groups : a periosteum preservation (PP) group (n=15) and a periosteum removal (PR) group. In the PP group, the fibula was totally removed, but the periosteum and blood supply were preserved. In the PR group(n=5), the fibula was totally removed, including the periosteum. Radiological and histological findings were evaluated after operation. In the PP group, the increase in regenerative bone volume was highest at 1 week. At 2 weeks, the bone volume decreased transiently, but then continued to increase gradually until 4 weeks. There was little change after 4 weeks. The regenerative bone mineral density continued to increase gradually from 5 days until 8 weeks. In the PR group, there was no evidence of regenerative bone. These results suggest that the periosteum has osteogenic capacity and the peak of bone regeneration from the periosteum occurs around 4 to 6 weeks.
