Research by Lasisi and Fasanmade shows that 
salivary flow rate in uncontrolled diabetes mellitus 
patients is lower than controlled diabetes mellitus 
patients, with uncontrolled type 2 diabetes mellitus 
patients having a low salivary flow rate (Lasisi and 
Fasanmade, 2012).
 
(Karuniawani, 2015) stated that salivary gland 
secretion can be stimulated in several ways, such as 
with mechanical stimulation. By chewing food, 
chewing can increase salivary secretion because 
chewing activity will stimulate the parasympathetic 
nerves, and dilate blood vessels in the salivary glands. 
Salivary secretion is highly dependent on the 
nutrients supplied by the blood vessels to the salivary 
gland.  (Roletta, 2002) states that stimulation with 
paraffin mastication increases salivary pH and, in this 
research, obtained an average salivary pH of 7.22, as 
known salivary pH is affected by salivary flow rate. 
The speed of stimulated salivary flow rate with 
paraffin mastication has increased, so that the salivary 
pH with stimulated flow rate will also increase 
(Karuniawati,  2015), (Roletta, 2002). 
Glucose is a small molecule that capable to move 
easily inside the blood vessels membrane, which can 
be removed from blood plasma to gingival fluid 
through the gingival sulcus, and reach the saliva. 
Enhancement of blood glucose level in diabetes 
mellitus patients can lead to the increase of salivary 
glucose level (Sumintarti and Rahma, 2015).
 
The relationship between fasting blood sugar 
levels and salivary flow rate and salivary pH (table 2) 
has been tested using the Pearson Correlation of 
significance p <0.05. Pearson Correlation between 
fasting blood sugar levels and salivary flow rate 
shows that a non-significant value (p> 0.05) with a 
very weak type of positive correlation (r = +0.181). 
(Bernardi, 2007) stated that in the uncontrolled of 
controlled diabetes mellitus group, there was a 
change in salivary flow rate but not significant. In this 
research showed that there was a relationship between 
salivary flow rate and blood sugar levels. Blood 
glucose concentration indicates hyperglycemia is 
factor that influences salivary flow rates. In this 
research has found the results of normal salivary flow 
rate with high blood sugar levels. It can be influenced 
by other things that can stimulate salivary secretion. 
In this research using masticatory stimulation with 
paraffin candy which can increase salivary secretion 
(Bernardi, 2007). 
Table 2 showed that there was not relationship 
between blood glucose and salivary pH in type 2 
diabetes mellitus patient. Salivary pH value in the 
majorities of the research subjects had. Normal 
salivary pH value in fasting blood glucose with high, 
moderate, and normal categories, and there were only 
3 patients had acid value. (Hedge, 2010) stated that, 
there was a significant differences between diabetes 
mellitus group and control group. Patients with 
diabetes mellitus had acid value in salivary pH, and it 
influenced by poor oral hygiene. Other research 
stated a different results. According to (Priyanto, 
2017), there were not significant relationship between 
blood glucose level and salivary pH. There are several 
assumption that can explained why there wasn’t any 
relationship between blood glucose level with the 
acidity of salivary pH. Blood glucose level had 
variation value that sometimes up and down which 
was due to the endogen factor of each respondents 
and was also affected by several non-physics and 
environmental factors. The decrease of medicine 
effect will leads to the increase of blood glucose level. 
while salivary pH affected by overall health factors 
such as diabetes mellitus disorders. Xerostomia is 
affected by local disturbances in salivary gland, 
medicine effects, and stress (Hedge, 2010), (Priyanto, 
2017). 
Table 3 showed that there was not relationship in 
blood glucose level with acetone level in type 2 
diabetes mellitus patient. According to (Mitrayana, 
2014), acetone is the most abundant compound in 
human airway system, and acetone concentration in 
airway system was increased in uncontrolled diabetes 
patient. According to (Muttaqin, 2012), blood glucose 
level and acetone concentration in saliva had a 
relationship, that patient with higher blood glucose 
will had higher acetone level in their saliva, however 
this research was done using
  spectroscopy. This 
research used diasen to assess the relationship 
between blood glucose and acetone level and this 
research showed that there wasn’t any significant 
relationship using diasen. Diasen is a tool to detect the 
acetone level in breath that was applied to type 2 
diabetes mellitus patient (Muttaqin, 2012). 
Figure 1 showed that there was a relationship 
between salivary flow rate and salivary pH. Normal 
salivary pH value range 6-7 and depends on the flow 
rate. An acidic pH will affect the flow rate become 
viscous (Pandey, 2014). 
Figure 2 showed that there was a relationship 
between acetone level and salivary flow rate. In graph 
3 showed that there was a relationship between 
acetone level and salivary pH. There is a inverse 
relationship between salivary pH and acetone level, 
acid value in pH causes an increase in ketoacidosis, 
therefore acetone level also increases.